As a matter of convention, an anticlockwise moment is taken as ________ and a clockwise moment is taken as ________.

Correct the mistakes, if any, in the following statements.

i) One newton is the force that produces an acceleration of 1 ms^-2 in an object of 1 gram mass.

ii) Action and reaction always act on the same body.

The important use of cryogenics is cryogenic fuels. What do you mean by cryogenic fuels?

A bullet of mass 20 g moving with a speed of 75 ms^-1 hits a fixed wooden plank and comes to rest after penetrating a distance of 5 cm. What is the average resistive force exerted by the wooden plank on the bullet?

A shopping cart has a mass of 65 kg. In order to accelerate the cart by 0.3ms^-2 what force would you exert on it?