Force Weight Mass Calculations

Calculate the potential energy of a car with a mass of 2,500 kg that is on a hill 100 meters above sea level.

• 250,000 J

• 2,450,000 J

• 2,451,663 J

• 248 J

Lilly's cat ran through your yard. The cat has a mass of 5 kg. He is running at a speed of 3 m/s. What is the kinetic energy of the cat as he runs?

• 8.5 J

• 45 J

• 7.5 J

• 22.5 J

Tags

NGSS.MS-PS3-1

What is the mass of a ball that has a kinetic energy of 115 J and is traveling at 9 m/s?

• 1035 kg

• 23.5 kg

• 12.8 kg

• 2.84 kg

Tags

NGSS.MS-PS3-1

A exercise ball is on a table 2.5 m above the ground. What is the mass of the ball if it has a GPE of 56.8 J?

• 71 kg

• 22.72 kg

• 142 kg

• 2.32 kg

If 150 Joules of work is needed to move a box 10 meters, what force was used? 

• 1500 N

• 15 N

• 1.5 N

• 150 N

Tags

NGSS.MS-PS2-2

How do we calculate work?

• W = F * d

• w = f * D

• W = F * D

• w = f * d

The formula used to find a torque is...

• (m)(g)

• (F) cos(Ɵ)

• (F)(r)

• (m)(a)

Giving the following image, there are _____ forces acting on the sytem.

• 3 forces (weight 1, weight 2, and distance 2)

• 2 forces(weight 1 and weight 2)

• 1 force (weight 1)

• 1 force ( weight 2)

If the kid on the left weights 490 N, 0.5m away from the pivont point, then the second kid must have____________ in order to keep it in static equilibrium

• 340 N, 0.1 m away from the pivont point to the right

• 220 N, 0.2 m away from the pivont point to the left

• 490 N, 0.5m away from the pivont point to the right

What is the weight of the package?

• 5 N

• 10 N

• 15 N

• 20 N