Name: __________________________________
Block: ____________
Date: _________
Unit 2 Review Packet
Define the following terms from Unit 1 and Unit 2:
1. Vector: ________________________________________________________________________
______________________________________________________________________________
2. Scalar: _________________________________________________________________________
______________________________________________________________________________
3. Resultant Velocity: _______________________________________________________________
______________________________________________________________________________
4. Free Fall: ______________________________________________________________________
______________________________________________________________________________
5. Terminal Velocity: _______________________________________________________________
______________________________________________________________________________
Adding Vectors
1. In each question below, circle the direction that we would normally consider the positive
direction?
a. South vs. North
b. East vs. West
c. Up vs. Down
d. Left vs. Right
2. What is the resultant velocity of a sailboat that has wind pushing it west at a speed of 8 m/s
and the current of the water pushing it east at a rate of 3 m/s?
3. How do we find the resultant vector of two velocities that are at right angles to each other?
___________________________________________________________________________
Name: __________________________________
Block: ____________
Date: _________
4. A plane is flying west with a speed of 300 m/s when it experiences a wind blowing 25 m/s to
the north. What is the resultant speed of the airplane?
Free Fall
1. What is the acceleration due to gravity on Earth? ______________________________________
2. A ball is launched vertically with a speed of 15 m/s. Label the VELOCITY and ACCELERATION at
each point indicated on the diagram.
B
Point A: ______________________________________________
Point B: _____________________________________________
C
A
Point C: ______________________________________________
3. Explain what happens to the speed and distance an object travels when it is experiencing free
fall.
__________________________________________________________________________
__________________________________________________________________________
Name: __________________________________
Block: ____________
Date: _________
4. Mark drops a water balloon out of a window on the 4th floor of a building. The water balloon
hits the ground 2.5 seconds after he releases it.
a. How fast was the water balloon moving when it hit the ground?
b. How high up was the window off the ground?
Projectile Motion
1. What is the shape of the path of a projectile? ______________________________________
2. At what angle is a projectile fired to achieve maximum horizontal distance? _____________
3. At what angle is a projectile fired to achieve maximum height? ________________________
4. Does the horizontal speed of a projectile affect how long it takes to hit the ground? _______
5. What must be true for an object to be undergoing projectile motion?
___________________________________________________________________________
___________________________________________________________________________
6. Robert kicks as a stone off a 15 meter tall cliff. The stone lands 8 m horizontally from the
edge of the cliff.
a. How long is the stone in the air?
b. How fast was the stone moving when it was kicked off the cliff?