Free Fall

Free Fall

Please get your notebooks ready for new notes!

Multiple Choice

A cheetah travels 75 m in 3 s. What is her velocity over the interval?

• 225 m/s
• 25 m/s 
• 0.04 m/s

Multiple Choice

A car slows down from +32 m/s to +8 m/s in 4 s. The acceleration is 

• 6 m/s/s opposite the motion
• 2m/s/s in the direction of motion
• 8 m/s/s opposite the motion

Open Ended

What's your good thing for today?

Today, we are going to work on practice problems together!

Press the "Raise Hand" button when you're ready to work out some problems!

Multiple Choice

A boat travels 12.0 m while it reduces its velocity from 9.5 m/s to 5.5 m/s. What is the magnitude of the boat’s acceleration while it travels the 12.0 m?

• 1.3 m/s²
• 2.5 m/s²
• 3.0 m/s²
• 7.5 m/s²

Multiple Choice

A golf ball accelerates off a tee at 15m/s², changing its velocity from 0m/s to 50 m/s down the fairway. How long did it take the golf ball to accelerate?

• 750 seconds
• 35 seconds
• 0.3 seconds
• 3.3 seconds

Multiple Choice

How long would it take a car, starting from rest and accelerating uniformly in a straight line at 5 m/s², to cover a distance of 200m

• 9.0s

• 10.5s

• 12.0s

• 15.5s

Multiple Choice

An object with an initial velocity of 3.50 m/s moves east along a straight and level path. The object then undergoes a constant acceleration of 1.80 m/s² east for a period of 5.00 s. How far does the object move while it is accelerating?

• 6.30 m
• 17.5 m
• 27.2 m
• 40.0 m

Multiple Choice

A car is traveling to the right with a speed of 29​​m/s when the rider slams on the accelerator to pass another car. The car passes in 110 m with constant acceleration and reaches a speed of 34m/s. We want to find the acceleration of the car as it sped up. What equation should you choose?

• vf=vi+at

• x=vit+1/2at²

• vf²=vi²+2aX

• x=((vf+vi)/2)t

Multiple Choice

A golf ball starts with a speed of 2 m/s and slows at a constant rate of 0.5 m/s², what is its velocity after 2 s?

• 0 m/s
• 0.5 m/s
• 1 m/s
• 1.5 m/s

Multiple Choice

A girl runs west at a constant speed of 3 m/sec for one minute and then runs east at the same speed for one minute .What is the magnitude of her average velocity over the entire two minutes?

• 360

• 180

• 60

• zero

Multiple Choice

A kingfisher is a bird that catches fish by plunging into water from a height of several meters .If a kingfisher dives from a height of 7 m with an average speed of 4 m/sec, how long does it take for it to reach the water?

• 6 sec

• 1.8 sec

• 9 sec

• 3.6 sec

Multiple Choice

A ball is dropped from rest from a height 6 m above the ground.

The ball falls freely and reaches the ground 1.1 seconds later.

What is the average speed of the ball?

• 6.1 m/sec

• 6.6 m/sec

• 5.5 m/sec

• 11 m/sec

Multiple Choice

A stone is thrown vertically upward with a speed

of 15.5 m/sec from the edge of a cliff 75 m high.

What total distance did it travel?

• 12.26 m

• 62.74 m

• 87.26 m

• 99.52 m