Work, Energy and Power

Related Questions

• The bob A of a simple pendulum is released when the string makes an angle of ${45^o}$with the vertical. It hits another bob B of the same material and same mass kept at rest on the table. If the collision is elastic

  ---

• A ball of mass m moves with speed v and strikes a wall having infinite mass and it returns with same speed then the work done by the ball on the wall is

  ---

• Two masses of 1kg and 16kg are moving with equal K.E. The ratio of magnitude of the linear momentum is

  ---

• A force applied by an engine of a train of mass $2.05 \times {10^6}kg$ changes its velocity from $5m/s$ to 25$m/s$ in $5$ minutes. The power of the engine is

  ---

• Two bodies of masses 2m and m have their K.E. in the ratio 8 : 1, then their ratio of momenta is

  ---