Name: __________________________
Period: _____
Pre-AP Physics 2D Motion Homework
Instructions: Answer each question in the space provided. Be sure to show all work (GUESS) and box
your answer(s). This homework assignment is due on 10/1/2010.
Part I: Projectile Motion
1. Batman drives the Bat-mobile off the roof of a building in
Gotham City at a velocity of 35.2 m/s and hits the street
3.11 seconds later.
a. How tall is the building?
b. How far away from the bottom of the building does he
land?
2. A Bomber is practicing a bombing run. The plane is flying with a horizontal velocity of 185
m/s, and releases a bomb when it is 593 m away (horizontally) from its target and scores a
direct hit. How high is the airplane flying (dy) when it drops the bomb?
3. A sniper fires a bullet parallel to the ground. If the barrel is 0.25 meters off the
ground and the initial velocity is 250 m/s, how far does the bullet travel
horizontally before it hits the ground?
Page 1 of 3
Pre-AP Physics 2D Motion Homework
4. A rock is kicked from the ground with a velocity of 15 m/s at an angle of 15o above the
horizontal. What is the range (dx) of the rock?
5. Tiger Woods is at it again! He hits a golf ball with a velocity of 25 m/s at an
angle of 65o. What is the range of Tiger’s golf ball?
6. A trebuchet fires a projectile at an angle of 50o with a velocity of 68 m/s. What is the
maximum height (dy) the projectile reaches at the apex of its trajectory?
Part II: Circular Motion
7. A Ferris wheel turns 480o before stopping. How many radians is this?
Page 2 of 3
Pre-AP Physics 2D Motion Homework
8. A child on a merry go round completes 1 revolution in 45 seconds. What is the angular
velocity of the merry go round?
9. The wheel of a car in motion has an angular velocity of 6.95 rad/s. What is the angular
displacement of the wheel after 90 seconds of rotation at this speed?
10. Two coins: a quarter and a penny, are sitting on an old-school record player
as it spins an old-school record. The quarter is 0.05 meters from the center
and the penny is 0.13 meters from the center. The record player completes
one rotation every 8 seconds as it plays.
a. What is the tangential velocity of the quarter as it rotates?
b. What is the tangential velocity of the penny as it rotates?
11. A “car” on a Ferris wheel is rotating with a tangential velocity of 2.5 m/s and is 3 meters from
the axis of rotation. What is the centripetal acceleration of the car?
12. A medieval knight is swinging a flail so that it has a centripetal acceleration of 72 m/s2.
If the length of the chain is 0.5 meters, what is the tangential velocity of the weight?
Page 3 of 3