If the speed of an object decreases, the direction of velocity and acceleration are in …………….. direction.
A) same
B) opposite
C) unable to say
D) none of these
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An object of mass 50 g moves uniformly along a circular orbit with an angular speed of 5 rad/s. If the linear speed of the particle is 25 m/s
Given: ω = 5 rad/s, v = 25 m/s, m = 50 g = 0.05 kg To find: radius (r), centipetal force (F) Formula: (i) v = ωr (ii) F = \(\frac{mv^2}{r}\) Calculation: From formula (i), r...
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A man travels two-third part of his total distance with speed `v_(1)` and rest one-third part with speed `v_(2)`. Find out the average speed of the ma
Correct Answer - `(3v_(1)v_(2))/(v_(2)+2v_(1))
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A 150 m long train is moving in north direction with a velocity of 5m/s and a parrot is also moving in north direction with a velocity of 10 m/s, then
Correct Answer - (i)`30sec (ii) 300m
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If an object moves constant velocity then acceleration is …………….
Correct option is C) zero
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Direction of acceleration is along the direction of …………….
Correct option is A) velocity
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An object may have A) varying speed without having varying velocity
B) varying velocity without having varying velocity
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The velocity of a small object that has separated from a rocket moving in free space with velocity of 11 km/s is
Correct option is B) 11 km/s
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The acceleration which can change only the direction of velocity of a body is called ………………..
D) centripetal acceleration
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Relative to the surface, the direction of the friction is always A) In the direction of motion of the object
B) Opposite to direction of the motion of the object
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Which of the two-linear velocity or the linear acceleration gives the direction of motion of a body?
Linear velocity.
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