The velocity of a cart at various instants is recorded in the table below

PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

The velocity of a cart at various instants is recorded in the table below. Time

(\text{s})

Velocity

(\text{m/s})

0 12 3 18 6 18 10 6 Answer the following: (a) Calculate the average acceleration of the cart for the entire interval from

t = 0\,\text{s}

t = 10\,\text{s}

. (b) Compute the average acceleration separately for the intervals (a)

0\text{–}3\,\text{s}

, (b)

3\text{–}6\,\text{s}

, and (c)

6\text{–}10\,\text{s}

. (c) On the basis of your answers to part (ii), state whether the cart is moving with uniform acceleration. Give a brief reason.