STAAR Review

What is the force on a 1000 kg elevator that is falling freely at 9.8 m/sec²

• 102.04 n

• 9,800 n

• 980 n

• 103 n

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

(8.6C) Four students raced toy cars on a track. The mass and acceleration of each car is recorded in the table.
Which toy car had the greatest applied force?

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS2-2

What is the net force?

• 5 N
• 45 N to the left
• 5 N to the right
• 45 N to the right

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

If there are two forces going in the SAME direction, you would ...?

• (-) Subtract the forces
• (+) Add the forces
• Neither
• (x) Multiply

Tags

NGSS.MS-PS2-2

What is the net force?

• 3 N Right

• 3 N Left

• 17 N Right

• 17 N Left

Tags

NGSS.MS-PS2-2

What is the mass of a rock falling at the acceleration of gravity (9.8m/s2) if it produces a force of 14 N?

Tags

NGSS.MS-PS2-2

F=MA
An object of mass 10 kg is accelerated upward at 2 m/s².  What force is required? 

• 20 N
• 2 N
• 5 N
• 0 N

Tags

NGSS.MS-PS2-2

A 50 kg skater pushed by a friend accelerates 5 m/s².  How much force did the friend apply?

• 45 N
• 15 N 
• 10 N
• 250 N

Tags

NGSS.MS-PS2-2

If you increase the mass on an object, its acceleration?

• decreases

• stays the same

• also increases

• stops

Tags

NGSS.MS-PS2-2

A magician pulls a tablecloth out from under dishes and glasses on a table without disturbing them.

• Newton's 1st Law
• Newton's 2nd Law
• Newton's 3rd Law
• None of them