A proton in a uniform electric field moves along a straight line with constant acceleration starting from rest. If it attains a velocity 4×103km/s at a distance of 2cm, the time required to reach the given velocity is :

A proton in a uniform electric field moves along a straight line with constant acceleration starting from rest. If it attains a velocity 4×103km/s at a distance of 2cm, the time required to reach the given velocity is :

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Q2

Starting from rest ,a car moves with uniform acceleration and attains a velocity of 72km/hr in 2s .It then moves with uniform speed for 25s and is then brought to rest in 10s under uniform retardation.Find the total distance travelled using velocity time graph.

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Q3

A car and bike start racing in a straight line. The distance of finish line from starting line is 100m. The minimum acceleration of car to win, if it accelerates uniformly starting from rest and the bike moves with a constant velocity of 10 m/s, is

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Q4

An electron moving with a velocity of 5×104ms−1 enters into a uniform electric field and acquires a uniform acceleration of 104ms−2 in the direction of its initial motion. How much distance the electron would cover in 5s?

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Q5

A body starting from rests accelerates uniformly along a straight line at the rate of 10ms−2 for 5 seconds. It moves for 2 second with uniform velocity of 50ms−1. Then it retards uniformly and comes to rest in 3s. Draw a velocity-time graph of the body and find the total distance traveled by the body.