Two Dimensional Motion

As the angle between this vector

and the horizontal axis is increased

from 15 to 90 degrees, what happens

to the magnitude of its vertical component?

• Increases

• Decreases

• Stays the Same

The picture shows three horizontally launched projectiles. All of the objects are launched from the same height at the same time but with different velocities. Which horizontally launched projectile lands first?

• The projectile which is launched at speed v1

• The projectile which is launched at speed v2

• The projectile which is launched at speed v3

• All three projectiles land at the same time

A lucky penny is tossed horizontally

with a velocity of 15 m/s from a

height of 100. m above the ground.

How long will it take the penny to hit

the ground?

• 1.5 s

• 2.5 s

• 4.5 s

• 20.5 s

A cannon ball is launched horizontally off a cliff with a velocity of 4 m/s. The cliff is 20 m high. Approximately how far from the base of the cliff, does the cannon ball land?

• 2 m

• 4 m

• 6 m

• 8 m

An air powered rocket is fired at an initial velocity of 50 m/s at an angle of 60 degrees. Find the horizontal component vx and the vertical component vy of its initial velocity.

• vx=25 m/s AND vy=43 m/s

• vx=43 m/s AND vy=25 m/s

• vx=50 m/s AND vy= 0m/s

• vx=35 m/s AND vy=35 m/s

A man walks 30 meters South, 25 meters West, 50 meters North, and 15 meters East in 80 seconds. What was his displacement?

• 35.4 meters NW
• 22.4 meters SE
• 119 meters
• 22.4 meters NW

The result of adding two vectors together is called the?

• independent vector
• resultant vector
• directional vector
• manipulated vector

At the instant a ball is thrown horizontally, an identical ball is dropped from the same height. Which ball hits the ground first? (no air resistance)

• the horizontally thrown ball
• they both hit the ground at the same time
• the dropped ball

A ball is thrown straight upward at 20 m/s. With no air resistance, the ball will return to the thrower's hand with a speed of?

• 20 m/s
• 40 m/s
• 80 m/s
• 0 m/s

What is the path of a projectile?

• Wavy line
• Parabola
• Hyperbola
• Projectiles don't follow a predictable path.