Question

2. An object experiences a net zero external unbalanced force. Is
If yes, state the conditions that must be placed on the
it possible for the object to be travelling with a non-zero velocity?
When a carpet is beaten with a sick, dust cornes out of it
magnitude and direction of the velocity. If no, provide a reason
3 Why is it advised to be any luggage kept on the roof of a bus
4. Abatsman hits a cricket ball which then rolls on a level ground.
After covering a short distance, the ball comes to rest. The ball
(b) velocity is proportional to the force exerted on the ball.
(d there is no unbalanced force on the ball, so the ball would
5. A truck starts from rest and rolls down a hill with a constant
7. A 8000 kg engine pulls a train of 5 wagons, each of 2000 kg,
along a horizontal track. If the engine exerts a force of 40000 N
and the track offers a friction force of 5000 N, then calculate
8. An automoble vehicle has a mass of 1500 kg. What must be
Exercises
2.
Eplain
with a rope?
slows to a stop because
(a) the batsınan did not hit the ball hard enough.
le) there is a force on the ball opposing the motion.
want to come to rest.
. on it
7 tonnes (Hint I tonne = 1000 kg.)
stone and the ice?
(a) the net accelerating force,
(b) the acceleration of the train; and
(c) the force of wagon 1 on wagon 2.
acceleration. It travels a distance of toomin 20 s. Find this
if its massi
6. A stone of 1 kg is thrown with a velocity of 20 m 5 acrose
a distance of 50 m. What is the force of friction between the
(d) m
the force between the vehicle and road if the vehicle is to be
stopped with a negative acceleration of 1.7 ms?
9. What is the momentum of an object of mass m moving with a
velocity ?
(a) (m)
(b) mu (c) me
10. Using a horizontal force of 200 N, we intend to move a wooden
cabinet across a floor at a constant velocity. What is the friction
force that will be exerted on the cabinet?
11. Two objects, each of mass 1.5 kg, are moving in the same
straight line but in opposite directions. The velocity of each
​

Answer 1

Answer:

When a net zero external unbalanced force is applied on the body, it is possible for the object to be travelling with a non-zero velocity. In fact, once an object comes into motion and there is a condition in which its motion is unopposed by any external force; the object will continue to remain in motion. It is necessary that the object moves at a constant velocity and in a particular direction.

Explanation:

Answer 2

Answer:

hellooo

Explanation:

ans in attachment