Question

1. (1) A truck starts from rest and roll down a hill with a constant acceleration. It travels a distance of 400
min 20 s. Find its acceleration Find the force acting on it if its mass is 7 metric ton (Hint: 1 metric ton
= 1000 kg).
(2 marks
(ii) An object of mass 1 kg travelling in a straight line with a velocity of 10 mscollides
with, and sticks to a stationary wooden block of mass 5 kg. Then they both more off
together in the same straight line. Calculate the total momentum just before the impact
and just after the impact. Also, calculate the velocity of the combined object. 3 marks)
(OR)
(1) What happens to the force between two objects, if
The mass of one object is doubled?
b. The distance between the objects is doubled and tripled?
The masses of both objects are doubled?
3 marks
(ii) Give three differences between acceleration due to gravity (@) and universal gravitational constant G).
2 marks)​

Answer 1

Explanation:

1. (1) A truck starts from rest and roll down a hill with a constant acceleration. It travels a distance of 400

min 20 s. Find its acceleration Find the force acting on it if its mass is 7 metric ton (Hint: 1 metric ton

= 1000 kg).

(2 marks

(ii) An object of mass 1 kg travelling in a straight line with a velocity of 10 mscollides

with, and sticks to a stationary wooden block of mass 5 kg. Then they both more off

together in the same straight line. Calculate the total momentum just before the impact

and just after the impact. Also, calculate the velocity of the combined object. 3 marks)

(OR)

(1) What happens to the force between two objects, if

The mass of one object is doubled?

b. The distance between the objects is doubled and tripled?

The masses of both objects are doubled?

3 marks

(ii) Give three differences between acceleration due to gravity (@) and universal gravitational constant G).

2 marks)