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WorksheetsPHYSICS
Total questions: 10
Worksheet time: 5mins
Which of the following statements is not correct for an object moving along a straight path in an accelerated motion?
Its speed keeps changing
Its velocity always changes
It always goes away from the Earth
A force is always acting on it
According to the third law of motion, action and reaction
always act on the same body
always act on different bodies in opposite directions
have same magnitude and directions
act on either body at normal to each other
A goalkeeper in a game of football pulls his hands backwards after holding the ball shot at the goal. This enables the goalkeeper to
exert larger force on the ball
reduce the force exerted by the balls on the hands
increase the rate of change of momentum
decrease the rate of change of momentum
The inertia of an object tends to cause the object
to increase its speed
to decrease its speed
to resist any change in its state of motion
o decelerate due to friction
An object of mass 2 kg is sliding with a constant velocity of 4 ms-1 on a frictionless horizontal table. The force required to keep the object moving with the same velocity is
32N
0N
2N
8N
Rocket works on the principle of conservation of
MASS
ENERGY
MOMENTUM
ALL
A water tanker filled up to 2
3
of its height is moving with a uniform speed. On a sudden application of brakes, the water in the tank would
move backward
move forward
be unaffected
rise upwards
When a number of forces acting simultaneously on a body bring about a change in its state of rest or of uniform motion in a straight line, then these forces acting on the body are said to be
(a) balanced forces
(b) equal forces
(c) unbalanced forces
(d) opposite forces
balanced forces
equal forces
unbalanced forces
opposite forces
When a car at high speed makes a sharp turn, the driver in a car tends to get thrown to the side opposite to the turn. This is due to the
(a)otion inertia of m
(b) inertia of time
(c) inertia of rest
(d) inertia of direction
Answer
Answer: (a) inertia of motion
INERTIA AT MOTION
INERTIA AT REST
INERTIA AT DIRECTION
NONE OF THESE
Which of the following is an incorrect statement?
(a) Mass is measure of inertia of a body.
(b) Newton’s first law of motion is the law of inertia.
(c) Unbalanced force produces constant velocity.
(d) Newton’s third law talks about the direction of the force.
Mass is measure of inertia of a body.
Newton’s first law of motion is the law of inertia.
Unbalanced force produces constant velocity.
Newton’s third law talks about the direction of the force.
