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is pushed through a distance of 
in 20 seconds. How much force is applied on the trolley?
drives on a flat road at a speed of 
. How much braking force do we need to stop it after traveling a distance of 
?
. The coefficient of friction between the body and the base is 
. What is the initial velocity of the body?
on a smooth horizontal surface. What is the distance covered after a coefficient of friction of 0.2 occurs between the body and the ground?
rises through a height of 
in 
. How much force does the elevator rise with?
is the time in seconds, and 
and 
are the positions of the body in the coordinate system in metres. The coordinate 
and 
acting on the body with weight 
?
and 
lying on a horizontal smooth surface are connected by a light rope. The rope breaks at a force greater than 
. Two forces 
and 
begin to act on the bodies in opposite directions as shown in the figure below. The constant 
, and 
is the time in seconds.
from the start of the forces?
long and is inclined at an angle 
to the horizontal. The height of the outer wall of the house is 
and the coefficient of friction between the brick and the roof is 
.
are attached to the ends of a light and inextensible rope, which is passed over a pulley. A smaller body of a mass 
is attached to the body on the right side of the rope. The mass of the rope and the pulley and the friction in the pulley are neglected.
acts on the body of mass 
.
and 
that are connected by a rope that is passed over a light pulley lie on a slope as shown in figure 1 below:
and 
to the horizontal. The coefficient of friction between the logs and the slope is 
. The log with mass 
is held 
above the second log with mass 
and both are released at some point.
and 
are connected by a rope which is passed over a light pulley as shown in figure 1 below.
and 
. The log with mass 
lower than the log with mass 
. What is the ratio of the mass 
to that of 
?
with respect to the direction of motion, as shown in the figure below. How much acceleration does the body move with?
to the horizontal. The force of friction between the body and the slope is 0.5 N.
with respect to the horizontal. The log moves with an acceleration of 
. What is the force of friction between the log and the surface?
. What is the force of the elevator rope?
is applied to a freely moving object. At one instant of time, the object has velocity 
and
. Which quantities must be in the same direction?
sits on a launch pad on the Earth’s surface. The rocket motors provide an upward force of 
on the rocket.
hits a wall with a velocity of 
perpendicular to the wall. The ball rebounds perpendicularly from the wall with a speed of 
. The contact time of the ball with the wall is 
.
is at rest on a horizontal floor.
downwards. The ball bounces from the floor and its velocity just after losing contact with the floor is 
upwards. The ball is in contact with the floor for 
.
and 
as shown in the figure below. Initially, the bodies are held so that their centers of gravity are 
apart. Ignore friction, if the bodies are released:
