Question

Suppose you are traveling down the highway at 100 km/hr, and want to pass a truck. You accelerate from 100 km/hr to 120 km/hr in 3 seconds in order to do so. What is your average acceleration, in meters per second squared (m/s 2 )

Answer 1

Answer:

1.87 ms-2

Explanation:

We need to convert the velocity from km/hr to m/s as follows;

100 × 1000/3600 = 27.7 m/s

Also

120 × 1000/3600 = 33.3 m/s

From;

v= u + at

v= 33.3 m/s

u= 27.7 m/s

t= 3 secs

v= u + at

a = v- u/t

a = 33.3 - 27.7/3

a= 1.87 ms-2