Question

A car has a weight of 2500 N is travelling at a constant velocity of 8km/h is brought to rest in 7 seconds. Calculate the average acceleration

Answer 1

Answer:

THEY HAVE GIVEN INITIAL VELOCITY (U) = 8 Km/h = 2.22 m/s

THEY HAVEL ALSO SAID THAT THE CAR SHOULD BE BROUGHT TO REST  

SO FINIAL VELOCITY(v) = 0

AND TIME (t)= 7s

ACCELERATION(a) = v - u/ t

= 0 - 2.22 / 7s

= -2.22 / 7

= - 0.317 m/s^2

the car is having a retardation of -0.317 m /s^2

Explanation:

pls just correct me if I have made any mistakes