Work, Energy & Power Mock Tests
57 questions available
Work, Energy & Power Mock Test 1
Questions:
30
Work, Energy & Power Mock Test 2
Questions:
27
नमूना प्रश्न
A car of mass 1000 kg moving with a velocity of 20 m/s is brought to rest by applying brakes over a distance of 50 m. The average braking force is:
Two identical balls collide head-on elastically. If ball A has velocity u and ball B has velocity -u before collision, after collision:
A body of mass 2 kg moving with a velocity of 6 m/s collides with a stationary body of mass 4 kg. After collision, the two bodies move together. The common velocity after collision is:
A body of mass 2 kg has a momentum of 10 kg m/s. Its kinetic energy is:
A force F = (3i + 4j) N displaces a body by s = (2i - j) m. The work done is:
A force of (4x) N acts on a particle moving along the x-axis from x = 0 m to x = 3 m. The work done by the force is:
A car of mass 1000 kg moving with a speed of 30 m/s applies brakes and comes to rest over a distance of 50 m. The magnitude of the braking force is:
A block of mass 2 kg moving at 6 m/s collides perfectly inelastically with a stationary block of mass 4 kg. The combined mass then compresses a spring of spring constant 600 N/m. The maximum compression of the spring is:
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