Force and Weight Problems

A 48.8 kg skater pushed by a friend accelerates 5.1 m/s².  How much force did the friend apply?

• 250 kgm/s²
• 9.6 N 
• 9.6 kgm/s²
• 248.9 N

Tags

NGSS.MS-PS2-2

A force of 123.4 N is applied to an object that accelerates at a rate of .05 m/s².  What is the mass of the object?

• 16.17 Nm/s² 
• 246.8 kg
• 2468 kg
• 16 kg

Tags

NGSS.MS-PS2-2

Two classes are playing tug of war. Mr. Brown's class pulls to the left with a force of 45 N. Mr. White's class pulls to the right with a force of 50 N. What is the net force? What is the direction of the force? Who won?

• 5N... right...Mr. White's class won.

• 5N...left... Mr. Brown's class won.

• 95N... left... Mr. Brown's class won.

• 95N... right... Mr. White's class won.

Tags

NGSS.MS-PS2-2

A 5 kg block is pulled across a table by a net force of 32 N. Calculate the acceleration of the object. 

• 6.4 N
• 6.4 m/s²
• 6.4 kg
• 6.4 kgm/s²

Tags

NGSS.MS-PS2-2

What is the acceleration of a 59.2 kg object pushed with a force of 500.6 newtons?

• 8.5 kgm/s²
• 29, 635.5 m/s²
• 8.5 m/s²
• 29,635.5 N/kg

Tags

NGSS.MS-PS2-2

If a force of 26 N is exerted on two balls, one with a mass of 0.52 kg and the other with a mass of 0.78 kg, which ball will have the greater acceleration?  

• The one with a mass of 0.78 kg will have the greatest acceleration.
• The one with a mass of 0.52 kg will have the greatest acceleration.
• They will both accelerate at the same rate.
• Neither one will accelerate.  

Tags

NGSS.MS-PS2-2

A child has a mass of 30 Kg. If the force of gravity on the moon is 1.6 m/s² , then what is the weight of the child on the moon?

• 48 N

• 18.75 N

• 48 Kgm/s²

• 0.1 Kgm/s²

The force of gravity on Jupiter is 2 times the gravitational force on Earth. If an object has a mass of 50 kg and a weight of 490 N on Earth, what would be the object's approximate mass and weight on Jupiter?

• 50 kg and 490 N

• 100 kg and 490 N

• 50 kg and 980 N

• 100 kg and 980 N

Tags

NGSS.MS-PS2-4

A person would weigh less on on the Moon than on the Earth because . . .

• Moon has more mass, and therefore more gravity
• Moon has less mass, and therefore more gravity
• Moon has more mass, and therefore less gravity
• Moon has less mass and therefore less gravity

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

The weight of a boulder on Neptune is 2,960 Newtons. The boulder has a mass of 269 kilograms. What is the acceleration due to gravity on Neptune?

• 0.1 m/s²

• 8.9 m/s²

• 796, 240 m/s²

• 11 m/s²

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4