physics
motion
Easy
Question
A particle moves along a semicircle of radius 10m in 5 seconds. The average velocity of the particle is
The correct answer is:
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A particle is constrained to move on a straight line path. It returns to the starting point after 10 sec. The total distance covered by the particle during this time is 30 m. Which of the following statements about the motion of the particle is false
A particle is constrained to move on a straight line path. It returns to the starting point after 10 sec. The total distance covered by the particle during this time is 30 m. Which of the following statements about the motion of the particle is false
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A 150 m long train is moving with a uniform velocity of 45 km/h. The time taken by the train to cross a bridge of length 850 meters is
A 150 m long train is moving with a uniform velocity of 45 km/h. The time taken by the train to cross a bridge of length 850 meters is
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Which of the following is a one dimensional motion
Which of the following is a one dimensional motion
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A train has a speed of 60 km/h. for the first one hour and 40 km/h for the next half hour. Its average speed in km/h is
A train has a speed of 60 km/h. for the first one hour and 40 km/h for the next half hour. Its average speed in km/h is
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A car moves for half of its time at 80 km/h and for rest half of time at 40 km/h. Total distance covered is 60 km. What is the average speed of the car
A car moves for half of its time at 80 km/h and for rest half of time at 40 km/h. Total distance covered is 60 km. What is the average speed of the car
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One car moving on a straight road covers one third of the distance with 20 km/hr and the rest with 60 km/hr. The average speed is
One car moving on a straight road covers one third of the distance with 20 km/hr and the rest with 60 km/hr. The average speed is
PhysicsMotion
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A car travels the first half of a distance between two places at a speed of 30 km/hr and the second half of the distance at 50 km/hr. The average speed of the car for the whole journey is
A car travels the first half of a distance between two places at a speed of 30 km/hr and the second half of the distance at 50 km/hr. The average speed of the car for the whole journey is
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A boy walks to his school at a distance of 6 km with constant speed of 2.5 km/hour and walks back with a constant speed of 4 km/hr. His average speed for round trip expressed in km/hour, is
A boy walks to his school at a distance of 6 km with constant speed of 2.5 km/hour and walks back with a constant speed of 4 km/hr. His average speed for round trip expressed in km/hour, is
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A car travels from A to B at a speed of 20km/hr and returns at a speed of 30km/hr . The average speed of the car for the whole journey is
A car travels from A to B at a speed of 20km/hr and returns at a speed of 30km/hr . The average speed of the car for the whole journey is
PhysicsMotion
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The displacement-time graph for two particles A and B are straight lines inclined at angles of 
with the time axis. The ratio of velocities of 
is
The displacement-time graph for two particles A and B are straight lines inclined at angles of with the time axis. The ratio of velocities of is
PhysicsMotion
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A person travels along a straight road for half the distance with velocity 
and the remaining half distance with velocity 
The average velocity is given by
A person travels along a straight road for half the distance with velocity and the remaining half distance with velocity The average velocity is given by
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If a particle travel in a circular path of radius r, what will be the distance and displacements after completion of one revolution.
If a particle travel in a circular path of radius r, what will be the distance and displacements after completion of one revolution.
PhysicsMotion
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A race horse runs straight north and covers a distance 12 m and turns east and travels a distance 5 m. Calculate the displacement.
A race horse runs straight north and covers a distance 12 m and turns east and travels a distance 5 m. Calculate the displacement.
PhysicsMotion
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A lens always forms a virtual, upright, and diminished image of an object placed in front of it. It is a ____ lens.
A lens always forms a virtual, upright, and diminished image of an object placed in front of it. It is a ____ lens.
PhysicsGrade-7
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What kind of images does a convex lens not form?
What kind of images does a convex lens not form?
PhysicsGrade-7
