Question

A truck starting from the rest travels down a hill with a constant acceleration.it travels a distance of 300m in 15sec.calculate it's acceleration.find the force acting on it,if it's mass is 10metric tonnes.​

Answer 1

Explanation:

Given :

Distance (s) = 300m

time (t) = 15sec

initial velocity (u) = 0m/s

final velocity (v) = s/t = 300/15 = 20m/s

for acceleration = v-u/t

= 20-0/15

= 4/3 m/s

for force

mass (m) = 10metric tonnes = 10×1000 = 10000kg

f = ma

f= 10000×4/3

= 13333.33 kgm/s-²