@d motion

What is the shortcut for finding the time for a projectile that goes up and back down to the same altitude?

• v cos Θ
• v sin Θ
• 1/2 g t²
• -2 V_y / g

Tags

NGSS.HS-PS2-4

What formula do you use to get fall time for a projectile if you only have y?

• -2 V_y / g
• V_yi t + 1/2 g t²
• x / V_x
• V sin Θ

A marble traveling at 3 m/s rolls off the edge of a 1 m high table. What is its initial vertical speed?

• -10 m/s

• 0 m/s

• -3 m/s

• -15 m/s

Tags

NGSS.HS-PS2-1

A cannon is fired horizontally from a 5.0 m tall tower. How much time will it take until the projectile hits the ground?

• 0.5 s

• 1.0 s

• 2.0 s

• 5.0 s

Tags

NGSS.HS-PS2-4

If a ball is launched horizontally at 40 m/s from a bridge, what will be the magnitude of its velocity after 3 seconds?

• 30 m/s

• 40 m/s

• 50 m/s

• 70 m/s

Tags

NGSS.HS-PS2-1

A cannonball is launched horizontally at 50 m/s from an 80 m tall cliff. How far will it go (horizontally) before hitting the ground?

• 100 m

• 200 m

• 400 m

• 800 m

Tags

NGSS.HS-PS2-4

A cannonball is fired at a 45.0° angle and an initial velocity of 625 m/s. Assume no air resistance. What is the vertical component of the cannonball’s velocity?What is the horizontal component of the cannonball’s velocity?

• -625 m/s; 625 m/s

• 441.9 m/s; 441.9 m/s

• -441.9 m/s; 441.9 m/s

• 0 m/s; 625 m/s

Tags

NGSS.MS-PS3-1

What is the height of a horizontal projectile if it takes 3 seconds to hit the ground?

• 3.00 m
• 29.4 m
• 44.1 m
• 88.3 m

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 m
• 30 m
• 65 m
• 43 m

Tags

NGSS.MS-PS2-4

NGSS.MS-PS3-1

A stunt man drives a car off a 10m high cliff at a speed of 20.0m/s. How far does the car land from the base of the cliff?

• 28.6 m

• 32.2 m

• 19.5 m

• 52.9 m

Tags

NGSS.HS-PS2-4