Question

3
4
Exercises
an object experiences anciens external imbalanced for
s possible for the object to be travelling with non zero velocity
Il yes. state the conditions that must be placed on the
magnitude and direction of the velocity. Ir no provide a reason
2. When a carpet is beaten with a stick, dust comes out of
Explain
Why is it advised to tie anv luue kept on the root of a bus
with a rope
Abatsman luts a cricket ball which then rolls on a level ground
After covering a short distance, the ball comes to rest. The ball
slows to a stop because
la) the batsman did not hit the ball hard enough.
Ibi velocity is proportional to the force exerted on the ball
ich there is a force on the ball opposing the motion.
Id there is no unbalanced force on the ball, so the ball would
want to come to rest
5. A truck starts from rest and rolls down a hill with a constant
acceleration It travels a distance o 400 m in 20 s. Find its
acceleration Find the force acting on it if its mass is
7 tonnes Hunt: 1 tonne - 1000 kg.)
6. A stone of 1 kg is thrown with a velocity of 20 m s' across
the frozen surface of a lake and comes to rest after travelling
a distance of 50 m What is the force of friction between the
stone and the ice?
7. A 8000 kg engine pulls a train or 5 wagons, each of 2000 k.
along a horizontal track. Ir the engine exerts a force of 40000 N​

Answer 1

Answer:

Hzjsjsnbxnsjnw ebehsjsnzmmzmznxndndnsjdjennendbdbdndnndndndndndndn