a test car travels in a straight line along the x axis. the graph in the figure shows the cars position x as a function of time. find the instantaneous velocity at point b

Acricket ball of 70g moving with a velocity of 0.5 m/s is stopped by a player in 0.5s what is the force applied to stop the ball

On a day when the barometer reads 75.23 cm, a reaction vessel holds 250 ml of ideal gas at 20 celsius. an oil manometer ( ρ= 810 kg/m^3) reads the pressure in the vessel to be 41 cm of oil and below atmospheric pressure. what volume will the gas occupy under s.t.p.?

A2k pendulum has a speed of 1 m/s at a height of 1/2 meter