There is danger of a vehicle skidding on a wet road. Reason (R) : The tyres of the vehicle lose their grip on the road due to increase in friction due to

presence of water on the road.

=force × distance a. work b. velocity c. pressure d. momentum

A1-lb collar is attached to a spring and slides without friction along a circular rod in a vertical plane. the spring has an undeformed length of 5 in. and a constant k =25 lb/ft. knowing that the collar is released from being held at a determine, the speed of the collar and the normal force between the collar and the rod as the collar passes through b.

A70 kg person standing in an elevator is accelerated upwards at a rate of 2.5 m/s2. what is the force of the elevator on the person? 770 n 250 n 875 n -525 n