Distance and direction

To draw and understand maps, which of the following abilities is/are required to be developed in primary level students ? A. Understanding of relative position. B.Understanding of relative distances and directions of places. C. Understanding of symbols and scale. D. Drawing precisely according to scale.

Bats can ascrtain distance, directions, nature and size of the ohstacles at night. This is possible by reflection of the emitted

A body, acted upon by a force of 50N, is displaced through a distance 10m in direction making an angle of 60^(@) with the force. Find the work done by the force.

A uniform circular disc of radius r placed on a rough horizontal plane has initial velocity v_(0) and angular omega_(0) as shown. The disc comes to rest after moving some distance in the direction of motion. Then

The velocity of a body moving in a straight line is increased by applying a constant force F, for some distance in the direction of the motion. Prove that the increase in the kinetic energy of the body is equal to the work done by the force on the body.