ME Calculation Exercise

A coconut with a mass of 1 kg is at a height of 12 meters from the ground. Calculate the g.p.e of the coconut!

• 1,2 joule

• 12 joule

• 120 joule

• 1200 joule

A coconut with a mass of 1 kg is at a height of 12 meters is falling to the ground. Calculate the kinetic of the coconut just before it reach the ground!

(calculate in Joules, fill in the number only!)

An iron ball of mass 0.2 kg is thrown vertically upwards. The kinetic energy of an object is 40 J when the ball is thrown. What the speed of the ball when it is thrown?

• 2 m/s

• 4 m/s

• 20 m/s

• 400 m/s

An iron ball of mass 0.2 kg is thrown vertically upwards. The kinetic energy of an object is 40 J when the ball is thrown. If g = 10 m/s², at the maximum height reached by the ball, the maximum potential energy store by the ball is..... J

(fill in the number only!)

An iron ball of mass 0.2 kg is thrown vertically upwards. The kinetic energy of an object is 40 J when the ball is thrown. If g = 10 m/s², then the maximum height reached by the ball is... .

• 2 m

• 5 m

• 10 m

• 20 m

An object with a mass of 6 kilograms is moving at a speed of 3 m/s.

What is the kinetic energy of the object?

• 27 J

• 18 J

• 9 J

• 2 J

An object is moving at a speed of 2 m/s.

If the kinetic energy of the object is 100 Joules, what is the mass of the object?

• 50 kg

• 200 kg

• 25 kg

• 100 kg

An object with a mass of 10 kilograms moves at a certain speed so that it has kinetic energy of 20 Joules. What is the speed of the object?

• 2 m/s

• 4 m/s

• 200 m/s

• 10 m/s

Object A has a mass of 1.5 kg and is in the position shown in the picture above. After a while the object fell to the ground.

The greatest potential energy possessed by object A is…

(known that g earth = 10 m/s2)

• 15 Joule

• 200 Joule

• 300 Joule

• 30.000 Joule

Object A has a mass of 1.5 kg and is in the position shown in the picture above. After a while the object fell to the ground.

The kinetic energy possessed by object A just before reach the ground is… Joule

(fill in the number only)