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A boat man could row his boat with a speed 10 ms-1 He wants to take his boat from P to a point Q just opposite on the other bank of the river flowing at a speed 4 ms-1. He should row his boat

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Important Questions on Kinematics

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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-1>Q 229
A boat takes 2 h to travel 8 km and back in still water. If the velocity of water is 4 km h-1, the time taken for going upstream 8 km and coming back is
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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-1>Q 230
A boat crosses a river with a velocity of 8 km h-1. If the resulting velocity of boat is 10 km h-1 then the
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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-1>Q 231
A man wearing a hat of extended length 12 cm is running in rain falling vertically downwards with speed 10 m/s. What should be the maximum speed with which man can run such that rain drops do not fall on his face (the length of his face below the extended part of the hat is 16 cm) ?
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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-1>Q 232
A boat is rowing in a river at the rate of 4.8 km h-1 with respect to river. The river flows at the rate of 6 km h-1. The speed of boat in ms-1 can be 
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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-1>Q 233
Two boats A and B having same speed relative to river are moving in a river. Boat A moves normal to the river current as observed by an observer moving with velocity of river current. Boat B moves normal. to the river as observed by the observer on the ground.
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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-1>Q 234
A man who can swim at a rate of 2 km h-1 in still river crosses a river to a point exactly opposite on the other bank by swimming in the direction 120° to the flow of the water in the river. The velocity of the water current in km h-1 is
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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-1>Q 235
During a rainstorm, raindrops are observed to be striking the ground at an angle θ with the vertical. A wind is blowing horizontally at the speed of 5.0 ms-1. The speed of raindrops is
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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-1>Q 236
A car with a vertical windshield moves along in a rainstorm at the speed of 40 km h-1. The rain drops fall vertically with a terminal speed of 20 m s-1. The angle with the vertical at which the rain drops strike the wind shield is: