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Dynamics
SI unit of momentum is:
Kg m/s
Newton
Joule
None of these
Momentum is defined as the product of an object’s mass and its velocity. Since mass is measured in kilograms (kg) and velocity in meters per second (m/s), the SI unit for momentum is kilogram meter per second (kg m/s).
Author:
rikazzz
Comment
Dynamics
The force that opposes the motion of moving objects is called
friction
velocity
inertia
position
Author:
rikazzz
Comment
Dynamics
The acceleration produced by a force of 120 N in a mass of 35 kg will be
4 ms
−2
3.43 ms
−2
5.21 ms
−2
6.8 ms
−2
Author:
rikazzz
Comment
Dynamics
The tires roll over easily on
smooth surface
rough surface
on coal tar
all of above
Author:
rikazzz
Comment
Dynamics
If the string is stretched by two opposite forces of 10 N then tension in the string is
5N
20 N
10 N
zero
Author:
rikazzz
Comment
Dynamics
Law of inertia is also known as newton’s
1st law of motion
2nd law of motion
3rd law of motion
all of above
Author:
rikazzz
Comment
Dynamics
(mass of a body × gravity) is equal to
weight
inertia
force
momentum
Author:
rikazzz
Comment
Dynamics
When we walk or run, to push the ground backward we need
inertia
position
friction
velocity
Author:
rikazzz
Comment
Dynamics
Two masses 7.5 kg and 6.7 kg are attached to the ends of an inextensible string passes over a frictionless pulley. Its tension when both masses are moving vertically will be equal to
50 N
70.7 N
65.6 N
45 N
Author:
rikazzz
Comment
Dynamics
A body of mass 10 kg is moving with the velocity of 15 ms
−1
. The force required to stop it in 3 seconds should be
50 Ns
100 Ns
75 Ns
170 Ns
Author:
rikazzz
Comment
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