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Q 7)One dyne is equal to exactly 10-5 newtons. Further, the dyne can be defined as "the force required to accelerate a mass of one gram at a rate of one centimetre per second squared."
Q.9)While catching a ball,a cricket player lowers his hands, because by doing so, he increases the time of catch. That is, the person increases the time to bring about a given change in momentum, and hence rate of change of momentum decreases. Thus, a small force is exerted by ball on the hands.
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6. we know that force is directly proportional to the mass of an object so the brake force{it is equal in both the cases then}then more force is exerted in the brakes of the ship than that of a car and thus the ship will take more time to stop than the car takes
7. One dyne is equal to exactly 10-5 newtons. Further, the dyne can be defined as "the force required to accelerate a mass of one gram at a rate of one centimetre per second squared."
8. The electric fan continues to rotate for some time after the current is switched off due to rotational inertia force.
9. While catching a ball, a cricket player lowers his hands, because by doing so, he increases the time of catch. That is, the person increases the time to bring about a given change in momentum, and hence rate of change of momentum decreases. Thus, a small force is exerted by ball on the hands.
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