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Force of friction between the tyre and road provides centripetal force.
To reduce friction and so to reduce wear & tear.
Use formula I = change in momentum = m(v – u) (Ans. 37500 Ns)
As s ∝ t, so acceleration a = 0, therefore, no external force is acting on the body.
Being heavier, cricket ball has higher rate of change of momentum during motion so more force sumed.
What provides the centripetal force to a car taking a turn on a level road?
Force of friction between the tyre and road provides centripetal force.
Force of friction between the tyre and road provides centripetal force.
See lessLubricants are used between the two parts of a machine. Why?
To reduce friction and so to reduce wear & tear.
To reduce friction and so to reduce wear & tear.
See lessCalculate the impulse necessary to stop a 1500 kg car moving at a speed of 25 ms⁻¹.
Use formula I = change in momentum = m(v – u) (Ans. 37500 Ns)
Use formula I = change in momentum = m(v – u)
See less(Ans. 37500 Ns)
The distance travelled by a moving body is directly proportional to time. Is any external force acting on it?
As s ∝ t, so acceleration a = 0, therefore, no external force is acting on the body.
As s ∝ t, so acceleration a = 0, therefore, no external force is acting on the body.
See lessWhy is it difficult to catch a cricket ball than a tennis ball even when both are moving with the same velocity ?
Being heavier, cricket ball has higher rate of change of momentum during motion so more force sumed.
Being heavier, cricket ball has higher rate of change of momentum during motion so more force sumed.
See less