Question

1. (a) A car accelerates at a constant rate of 1.83 m/s along a flat straight road.
The force acting on the car is 1.870 KN.
Calculate the mass of the car.
Give your answer to three significant figures.
(3)
mass=
kg
(b) The car accelerates from rest for 16 s.
Calculate the speed of the car after 16 s.
(3)
speed
m/s

Answer 1

Explanation:

as the acceleration is constant so apply F=ma

We get m=F/a

so m=1.87×10³/1.83 =1.02×10³ kg

(b) here the car accelerate from rest so initial speed 'u' is equal to zero

hence applying v=u+at

v=0+1.83×16=29.3m/s

Answer 2

Answer:

thank you for the answer