Two boys push horizontally a 30kg bicycle and it accelerates at 1.5 m/s2. if the sum of opposing force is 40n. what force must they be exerting on it.

Aplayer uses a hockey stick to push a puck at a constant velocity across the ice. the weight of the puck is 170 n. the coefficient of friction is 0.0600. with what force must the player push the puck so that his force just equals the frictional force? 28.3 n 0.999 n 0.102 n 0.0104 n