The more mass an object has, the faster it will fall.

• True
• False

Tags

NGSS.MS-PS2-4

If you throw a baseball straight up, what is its velocity at the highest point?

• about 10 m/s²

• about 10 m/s

• 0 m/s²

• 0 m/s

Tags

NGSS.HS-PS2-1

If you throw a baseball straight up, what is its acceleration at the highest point?

• about 10 m/s²

• about 10 m/s

• 0 m/s²

• 0 m/s

Tags

NGSS.HS-PS2-1

A frog jumps vertically straight up. Which of the following is true?

• gravity gives the frog a vertical speed of -10 m/s

• gravity gives the frog a vertical acceleration of -10 m/s²

• the frog has a horizontal speed of -10 m/s

• the frog has a horizontal acceleration of -10 m/s²

Tags

NGSS.HS-PS2-1

A super frog jumps straight up at a speed of 27m/s. What is the frogs speed over the next 3 seconds?

• 1 second:17 m/s, 2 seconds:7 m/s, 3seconds: -7m/.s

• 1 second:17 m/s, 2 seconds:7 m/s, 3seconds: -3m/.s

• 1 second:9 m/s, 2 seconds:3 m/s, 3seconds: 1m/.s

Which of the following would NOT be considered a projectile?

• a cannonball thrown straight up

• a cannon ball rolling down a hill

• a cannonball rolling off a table

• a cannonball thrown into the air

Suppose Lemming A runs off the edge of the cliff at 2 m/s and Lemming B runs off the edge at 1 m/s. Which will hit the ground farther from the base of the cliff?

• A

• B

• Both at the same distance

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

Suppose Lemming A runs off the edge of the cliff at 2 m/s and Lemming B runs off the edge at 1 m/s. Which will hit the ground first?

• A

• B

• Both at the same time

An object is thrown horizontally from a cliff. The time it takes to hit the ground is

• more than if it was just dropped

• less than if it was just dropped

• the same amount of time than if it was just dropped

• impossible to determine

A projectile is launched with a horizontal speed of 54 m/s. Ignoring air resistance, after 2 seconds it's horizontal speed is...

• 34 m/s

• 54 m/s