When the car starts to run at an acceleration of 4m / s and 178; from a standstill, a bicycle passes by at a speed of 8m / s (1) How long does it take for the car to catch up with the bike? (2) What is the speed of the car at this time?

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• 1. A car is waiting for the green light at the intersection. When the green light is on, the car starts to drive at an acceleration of 3m / S2. Just then, a bicycle passes by the car at a speed of 6m / S2. How long does it take for the car to run from the intersection before chasing the bicycle? How to get the distance between the two cars?
• 2. A car is waiting for the green light at the intersection. When the green light is on, the car starts to drive at an acceleration of 3m / S2. Just at this moment, a bicycle comes at a constant speed of 6m / s and overtakes the car from behind? What is the distance at this time? (2) When does the car catch up with the bicycle and what is the speed of the car at this time?
• 3. A car is waiting for the green light at the intersection. When the green light is on, the car starts to accelerate at an acceleration of 3m / S2. Just at this time, a bicycle comes at a constant speed of 6m / s and overtakes the car from behind? What is the distance at this time? (2) How long will the car catch up with the bike? How fast is the car when catching up?
• 4. (1 / 2) a car is waiting for the green light at the intersection. When the square green light is on, the car starts to drive with an acceleration of 3 meters square. Just here is a bicycle with 6 (1 / 2) a car is waiting for the green light at the intersection. When the square green light is on, the car starts to drive at an acceleration of 3 meters square. Just here is a bicycle coming at the speed of 6 meters bungalow, passing the car from behind (2 / 2) the farthest distance between the two vehicles before catching up with the bicycle? 2. The speed of the vehicle when catching up with the bicycle?
• 5. A car is waiting for the green light at the intersection. When the green light is on, the car starts to run at an acceleration of 3m / SS. Just at this time, a bicycle comes at a constant speed of 6m / s and drives past the car from behind (1) After the car starts, how long does it take before catching up with the bicycle? What is the distance between the two cars at this time? (2) When does the car catch up with the bike? What's the speed of the car at this time?
• 6. A car is waiting for the green light at the intersection. When the green light is on, the car starts to drive at an acceleration of 2m / S2. Just at this time, a bicycle drives in the same direction at a speed of 6m / s (1) How long does it take for a car to catch up with a bicycle? The farthest distance between the two cars is the maximum distance between the car and the bicycle (2) What is the speed of the car at this time? When does the car catch up with the bicycle? Just at this time, a bicycle at the speed of 6 m / s drove in the same direction. Passing the car from behind,
• 7. If an object moving in a straight line with uniform velocity changes 6 m in the second second, and the displacement is 0 in the fifth, what is its initial velocity and acceleration? Let the direction of the initial velocity be the positive direction. I've previewed it, but some haven't learned it
• 8. When an object moves in a variable speed straight line, the distance it passes in the first second is 3M, the distance it passes in the second second is 5m, and the distance it passes in the first three seconds is 15m, then what is its average speed in the first second, the average speed in the first two seconds, and the average speed in the third seconds?
• 9. When the object starts to move in a straight line with uniform acceleration from its rest, it is known that the difference between the displacement in the 4th and 2nd seconds is 12M, and then (1) the acceleration of the object moving and (2) the average velocity in the 4th second can be obtained A car is moving in a straight line with uniform acceleration. It takes 5 seconds to pass two trees 80 meters apart on the roadside. The speed when it passes the first tree is 8 MGS. Find the speed when it passes the second tree I have to do it today,
• 10. The object starts to move in a straight line with uniform acceleration from static state, and the acceleration is 1 meter per square second. What is the displacement of the object in the second second second? The answer is 3M. Can I use the average velocity in the second second second? How can I not find it?
• 11. As for free falling bodies, why does falling time have nothing to do with mass In vacuum, two objects with the same volume but different mass. The one with larger mass bears more force. Why do they land at the same time as the one with smaller mass? Please talk about it in combination with the actual situation, The reason why it will fall is due to gravity, and the mass is related to gravity. How can the speed be the same? What's going on
• 12. On the freeway, if a car with a length of 4 meters and a speed of 110 km / h is ready to overtake a truck with a length of 12 meters and a speed of 100 km / h, it will take about () A. 1.6 seconds B. 4.32 seconds C. 5.76 seconds D. 345.6 seconds
• 13. As shown in the figure, a car starts from o point and runs eastward at a constant speed of 100 km / h along a straight road along the coast. When the car starts, there is a speedboat at m on the sea 500 km south by east of o point and 300 km away from the coast MQ. Starting at the same time with the car, to deliver an important item to the driver of the car, ask at least what speed the speedboat must travel Only when the speedboat is running at the minimum speed, can the goods be delivered to the driver
• 14. On the expressway, a 5m long car with a speed of 110km / h is going to overtake a 15m long car with a speed of 100km / h. (equation) Can a car overtake a cart? If so, how long will it take?
• 15. How many seconds does it take for a car with a speed of 110km / h and a length of 3m to overtake a truck with a speed of 100km / h and a length of 17m on the expressway?
• 16. The average speed of the car in the fifth second can be calculated by making the car move in a straight line with the acceleration of 2m / S2 from the static state______ ．
• 17. If the vehicle starts to move from standstill with an acceleration of 2m / S ^ 2, the speed of the vehicle at the end of the fifth second is____ M / s, the average speed of the car in the fifth second is____ M / s, what is the displacement of the car in the fifth second___ m
• 18. When the vehicle starts from a standstill with an acceleration of 2m / S2, what is the speed of the vehicle at the end of the fifth second? What is the average speed of the car in the fifth second? What is the displacement of the car in the fifth second?
• 19. What is the maximum acceleration of a car when accelerating from static to 100km / h, and the shortest time is 5S What is the maximum acceleration of a car when accelerating uniformly from static speed to 100km / h, and the shortest time is 5S? If the car brakes after accelerating to 108km / h, and the car stops after 5S, how much is the acceleration after braking? What's the direction? I'm a freshman. I don't quite understand
• 20. It takes 5 minutes for a train to go from standstill to 100 km / h, and 10 seconds for a car