Physics Test - ...

Distance between a frog and an insect on a horizontal plane is 9 m. Frog can jump with a miximum speed of√10m/s . Minimum number of jumps required by the frog to catch the insect is (Take g = 10 m /s²)

For a satellite escape velocity is 11 km/s. If the satellite is launched at an angle of 600600 with the vertical, then escape velocity would be

A particle P is moving in a circle of radius 'a' with a uniform speed v . C is the centre of the circle and AB is a diameter. When passing through B the angular velocity of P about A  and B  are in the ratio

A car is going with constant speed on a circular path. If it starts from point A at t = 0 and reaches diametrically opposite point B after 2 sec then find its angular velocity.

A force has been applied on a ball when it is

If the unit of force and length each be increased by four times, then the unit of energy is increased by

In the system shown in figure, the pulley is smooth and massless, the string has a total mass 5g, and the two suspended blocks have masses 25g and 15g. The system is released from state l=0 and is studied upto stage l′=0. During the process, the acceleration of block A will be

A body of mass 2kg is projected with an initial velocity of 5 ms⁻¹ along a rough horizontal table.The magnitude of work done on the body by the frictional forces before it is brought to rest is:

A solid sphere is rotating in free space. If the radius of the sphere is increased keeping the mass same without applying any external force, which one of the following will not be affected?