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It took a man 3 seconds nto raise a load of 40kg to a hight of 25 m.Determine the average power employed.
A 5-kg box is dropped from a height of 68 m. What is the potential energy of the ball? Assuming that the reference position is the ground.
A gas occupies a volume of 50 mL at a temperature of 0°C and a pressure of 2,000 N / m3. What volume will be occupied by the same amount of gas also at 0°C if the pressure is increased to 10,000 N / m3.
If a 10 kg object is moving at 5 m/s what force is required to maintain it the force is required to stop it in two seconds
Assuming that the object are on Earth, where acceleration due to gravity is
10N/kg, calculate the gravitational potential energy that they had.
5. A freely falling ball of mass m = 0.5 kg passes a window 1.5 m high.
(B) If its speed at the top of the window was 2 m/s, what will its speed be at the bottom of the window?
(A) How much did the kinetic energy of the ball increase as it fell past the window?
A 4kg panel of a car oscillators with frequency 5hz amplitude of 25cm . If the oscillation is assumed to be S.H.M calculate
The maximum velocity of the panel
The total energy of the panel
The maximum potential and K.E energy of the panel is 2cm from its equlibrium equation
From her bedroom window a girl drops a water-filled balloon to the ground, 4.81 m below. If the balloon is released from rest, how long is it in the air
A ball is thrown vertically upward, which is the positive direction. A little later it returns to its point of release. The ball is in the air for a total time of 8.33 s. What is its initial velocity? Neglect air
A sprinter explodes out of the starting block with an acceleration of +2.31 m/s2, which she sustains for 1.50 s. Then, her acceleration drops to zero for the rest of the race. What is her velocity at (a)t = 1.50 s and (b) at the end of the race?
