An object moves along a straight track as follows: • It starts from rest and…

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

An object moves along a straight track as follows: • It starts from rest and accelerates uniformly at

3\,\text{m/s}^2

for the first

4\,\text{s}

. • It then continues at the constant velocity attained for the next

3\,\text{s}

. • Finally, it moves with a constant velocity of

-2\,\text{m/s}

for the last

5\,\text{s}

. Determine the net displacement of the object for the entire motion. (a)

60\,\text{m}

(b)

54\,\text{m}

(c)

50\,\text{m}

(d)

38\,\text{m}