Physics-
General
Easy
Question
Angular acceleration, a is zero in case of ........
- Uniform circular motion
- Non - uniform circular motion
- Uniform speed of body
- Non - uniform speed of body
The correct answer is: Uniform circular motion
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Translatory motion can be analysed by......
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A boat which has speed of 13 kmph in still water crosses a river of width 1 km along the shortest possible path in 12 minutes The velocity of the river water in kmph is..
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Two particles A and B are projected simultaneously in the directions shown in figure with velocities 
and 
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Find the angle at ‘A’ with horizontal.
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If the particles collide in air, then find the angle of projection ‘a ’ of particle ‘B’.
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Rain is falling with a velocity of 25m/s. A woman rides a bicycle with a speed of 10m/s in the north to south direction. What is the direction in which she should hold her umbrella to save herself from rain.
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A person swims in a river aiming to reach exactly on the opposite point on the bank of a river. His speed of swimming is 0.5m/s at an angle of 120° with the direction of flow of water. The speed of water is ..
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A man crosses a river from point ‘A’. If he swims perpendicular to the bank, he reaches point C 10minutes later. If he swims at angle a to ‘AB’ he reaches B in 12.5 minutes.
Find the direction of the boat with the vertical.
A man crosses a river from point ‘A’. If he swims perpendicular to the bank, he reaches point C 10minutes later. If he swims at angle a to ‘AB’ he reaches B in 12.5 minutes.
Find the direction of the boat with the vertical.
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A river is flowing from west to east at a speed of 5m/min. In what direction should a man on the south bank of the river capable of swimming at 10m/min, in still water should swim to cross the river in shortest time.
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Two objects ‘A’ and ‘B’ are moving along the directions as shown in figure. Find the relative velocity of B with respect to A.
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A plank is moving on the ground with velocity ‘V1 ’ and a block is moving on the plank with velocity ‘V2 ’ relative to the plank. What will be the actual velocity of the block.
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Two cars A and B are moving with a velocity of 50m/s in opposite directions along the same path. Find the relative velocity of ‘A’ with respect to ‘B’.
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If two cars A and B are travelling with velocities 4m/s and 3m/s in same direction then velocity of car A with respect to car B is ..
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Assertion : When a bicycle is in motion, the force of friction exerted by the ground on the two wheels is always in forward direction.
Reason : The frictional force acts only when the bodies are in contact.
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Reason : The frictional force acts only when the bodies are in contact.
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