Physics Test 2...

If a block of mass M is floating on the water (ρw= 1000 kg/m³) with 100 cm³ volume such that 1/4^th of the volume of the block is immersed in water. Find the mass of another block placed over this block such that lower block just gets immersed completely.

What is not true regarding Reynold’s number?

A 70kg man, standing on the bank of the river, suddenly jumps in a boat with mass 10kg and going with speed 10m/s (X-direction) downstream, perpendicular to its motion. The velocity of man while jumping is 2m/s (Y-direction). Find the final velocity with direction. Assume the velocities of the man (y-axis) and the boat (x-axis) are pointing in the positive direction initially.

The upstream velocity of a boat is 2m/s and downstream velocity is 20m/s and distance between two points is 500m. What is the time required by the boat to go upstream if the river is flowing with half of the original speed?

Which of the following is true?

For a particle performing SHM, if the maximum velocity of the particle is made 4 times, which one of the following is true?

If two balls, 2 kg and 5 kg, are separated such that their center of mass lies at the origin. If the 2 kg ball starts moving at velocity 5 m/s to the left and the 5 kg ball starts moving right with velocity 1 m/s, find the velocity and position of the center of mass after 4 sec.