Question

A body rolls down the hill at a speed of 7 m/s and eventually stops before crashing into a wall. One can assume that its acceleration

A)kept on decreasing

B)kept on increasing

C)remained the same throughout

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Answer 1

Answer:

Solids have the lowest kinetic energy whereas gases have the highest kinetic energy. Hence, hydrogen has the highest kinetic energy among the above examples.

Answer 2

A) kept on decreasing

If the body kept on increasing or remain throught the same there are possibilities to crash into the wall. So, the acceleration of the body kept on decreasing gradually.

for example: If a car is accelerated and while going in the upward side of the bridge the acceleration of the car decreases only when you increase acceleration the car goes on unless it is stoped by external force.