POE 4.2.2 Projectile Motion

A projectile is launched at a speed of 900 m/s and angle of elevation of 30°. The vertical component of the launch velocity is:

• 450 m/s

• 520 m/s

• 780 m/s

• 900 m/s

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

• 9.8 m/s²
• 9.8 m/s
• 0 m/s²
• 0 m/s

Tags

NGSS.HS-PS2-1

An object is launched 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 baseball is thrown at a 22.5° angle and an initial velocity of 65 m/s. Assume no air resistance. What is the vertical component of the ball’s velocity?

• 24.9 m/s

• 60.1 m/s

• 0 m/s

• 171 m/s

A baseball is thrown at a 22.5° angle and an initial velocity of 65 m/s. Assume no air resistance. What is the horizontal component of the ball’s velocity?

• 60.1 m/s

• 24.9 m/s

• 65 m/s

• 171 m/s

The acceleration of the vertical component during the whole trip is always...

• 0 m/s²

• 3.6 m/s²

• 5 m/s²

• -9.8 m/s²

Tags

NGSS.HS-PS2-1

A crazy squirrel jumps from a tree with a horizontal speed of 10 m/s to its ultimate demise. It hits the ground 2.0 s later. The horizontal distance from the base of the tree to where the squirrel strikes the ground is:

• 2 m
• 20 m
• 5 m
• 0.2 m

Gun #1 is fired horizontally at 10 m/s and gun #2 is fired horizontally at 50 m/s. Which bullet hits the ground first?

• Bullet #1

• Bullet #2

• They both will hit at the same time

• It depends on the caliber of the bullets

If a projectile is launched horizontally from a height of 12 m, how long will it take to hit the ground?

• 2.45 seconds

• 5.16 seconds

• 1.56 seconds

• 4.25 seconds

Tags

NGSS.HS-PS2-4

A ball is thrown horizontally at a height of 2.2 meters at a velocity of 65 m/s. Assume no air resistance. How far did the ball travel horizontally when it hit the ground?

• 14.3 m
• 30.55 m
• 65 m
• 43.55 m