KE/PE Problems 1

What is the formula for Gravitational Potential Energy?

• PE = mgh

• KE = 1/2mv²

• W = Fd

• P = W/t

Tags

NGSS.MS-PS2-4

NGSS.MS-PS3-2

What is the formula for Kinetic Energy?

• PE = mgh

• KE = 1/2mv²

• W = Fd

• P = W/t

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

What is the KE of a football which has a mass of 0.8 kg and is kicked at a velocity of 10m/s? ( KE = 1/2mv² )

• 80 J

• 3.2 J

• 160 J

• 40 J

What is the kinetic energy of a 4kg shotput thrown with a velocity of 13m/s? ( KE = 1/2mv² )

• 676 J

• 3.25 J

• 17J

• 338 J

An explosion of gas from a Hawaiian volcano blows a rock into the sky. The rock has 2000J of kinetic energy. What was its mass if the rock had a velocity of 20m/s? ( KE = 1/2mv² )

• 200Kg

• 20,000Kg

• 10Kg

• 200Kg

A rabbit with a mass of 3kg walks at a speed of 0.5m/s. Calculate its kinetic energy.

• 0.5 J

• 0.75 J

• 0.255 J

• 0.375 J

Tags

NGSS.MS-PS3-1

An explosion of gas from a Hawaiian volcano blows a rock into the sky. The rock reaches 100 meters in height. It has a mass of 5 kg. How much potential energy does the rock have before it begins falling back to earth? ( PE = mgh )

• 500J

• 50J

• 4,905 J

• 49.05J

A leopard with a mass of 55.00 kg climbs 12.0 m up a tree. What is its PE? ( PE = mgh )

• 6,468 J

• 660 J

• 4.58 J

• 0.22 J

What is the PE of a 0.15 kg baseball once it reaches the apex of its motion at 18 m above the ground? ( PE = mgh )

• 26.46 J

• 2.7 J

• 120 J

• 1,176 J