Calculations

What is the force on a 1000 kg elevator that is falling freely at 9.8 m/sec

• 102.04 n

• 9,800 n

• 980 n

• 103 n

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

A 50 kg skater pushed by a friend accelerates 5 m/sec².  How much force did the friend apply?

• 45 N

• 15 N 

• 10 N

• 250 N

Tags

NGSS.MS-PS2-2

How much force is needed to accelerate a 3kg skateboard at 5m/s^2. 

• 8N

• 1.6N

• 0.6N

• 15N

Tags

NGSS.MS-PS2-2

What is the acceleration of a 50 kg object pushed with a force of 500 newtons?

• 100 m/s²

• 25,000 m/s²

• 10 m/s²

• 25 m/s²

Tags

NGSS.MS-PS2-2

If a force of 10 N is applied to move an object by 5 meters, how much work is done?

• 2 J

• 50 J

• 15 J

• 5 J

Which of the following is the answer for the problem with the correct number of significant digits?
23.91 x 12.861 = 307.50651

• 308

• 307.51

• 307.5

• 307

If you apply a force of 20 N to push a box 10 meters, how much work have you done?

• 200 J

• 20 J

• 2 J

• 2000 J

Tags

NGSS.MS-PS3-5

A 20 kg bike accelerates at 10 m/s².  what was the force?

• 25 Newtons

• 20 Newtons

• 200 Newtons

• 10 Newtons

Tags

NGSS.MS-PS2-2

You and your dad are moving the couch from one side to another. Your dad pushes with a force of 35 N to the right and you push with a force of 25 N right. What is the net force on the couch?

• 60 N right

• 10 N left

• 60 n right

• 50 N left

Tags

NGSS.MS-PS2-2

A 50 kg skater pushed by a friend accelerates 5 m/s².  How much force did the friend apply? The answer to this question is most likely (HINT: Look at the units!!!) - 

• 250 N

• 250 m/s²

• 250 kg 

Tags

NGSS.MS-PS2-2