

1. 
Find the initial horizontal velocity and vertical velocity of a stone kicked with an initial velocity of 15 feet per second at an angle of 42° with the ground. 


A. 
about 10 ft/s, about 22 ft/s 
B. 
about 11 ft/s, about 13 ft/s 


C. 
about 14 ft/s, about 12 ft/s 
D. 
about 11 ft/s, about 10 ft/s 


Hint 


2. 
Suppose a football player kicks a football with an initial velocity of 22 yards per second at an angle of 63° to the horizontal. Suppose a kick returner catches the ball 3.6 seconds later. How far has the ball traveled horizontally? 


A. 
about 154 feet 
B. 
about 223 feet 


C. 
about 85 feet 
D. 
about 108 feet 


Hint 


3. 
Find the initial horizontal velocity of a javelin thrown at 70 feet per second at an angle of 55° with the horizontal. 


A. 
about 50 ft/s 
B. 
about 30 ft/s 


C. 
about 40 ft/s 
D. 
about 20 ft/s 


Hint 


4. 
Karla is in a contest to see who can hit a baseball the farthest. If she hits a ball with an initial velocity of 94.5 ft/s at an angle of 42° with the horizontal, how far will the ball travel before it hits the ground? 


A. 
395 ft 
B. 
250 ft 


C. 
277 ft 
D. 
139 ft 


Hint 


5. 
If a quarterback throws a 30yard pass to his receiver with an initial velocity of 21 yards per second at an angle of 15 with the horizontal, how long is the ball in the air? 


A. 
0.68 s 
B. 
1.43 s 


C. 
5.52 s 
D. 
1.48 s 


Hint 

