Regents Physics HW

1
Regents PhysicsHW 8 Projectile Motion

• CHAPTER 7.1-7.2
• PROBLEMS pg 172 38a,39,40,41,42,45,46,47
• Due Wed, Day 2 10/26

2
HW 8 7-38a
Vf Vo at
d Vot ½ (at2)
Vf 2 Vo2 2ad
3
HW 8 7-39
Vf Vo at
d Vot ½ (at2)
Vf 2 Vo2 2ad
4
HW 8 7-39
Vf Vo at
d Vot ½ (at2)
Vf 2 Vo2 2ad
5
HW 8 7-40
Vf Vo at
d Vot ½ (at2)
Vf 2 Vo2 2ad
6
HW 8 7-41
Vf Vo at
d Vot ½ (at2)
Vf 2 Vo2 2ad
7
HW 8 7-42
Vf Vo at
d Vot ½ (at2)
Vf 2 Vo2 2ad
8
HW 8 7-45
Vf Vo at
d Vot ½ (at2)
Vf 2 Vo2 2ad
9
HW 8 7-46
Vf Vo at
d Vot ½ (at2)
Vf 2 Vo2 2ad
10
HW 8 7-47
Vf Vo at
d Vot ½ (at2)
Vf 2 Vo2 2ad
11
PART 2 FREE RESPONSE SHOW ALL WORK CLEARLY.
INCLUDE UNITS IN SUBSTITUTIONS AND FINAL ANSWER.

• A marble is launched in a horizontal direction
  with an unknown speed toward the classroom wall
  as shown below. It strikes the wall .5 m above
  the floor (H)
• a) Given the values of X, Yo and H below, find
  all values and fill in the chart below. LET g
  10 m/s2
• b) What is the speed of the marble just before it
  hits the wall?

Vo ?
Vf Vo at
d Vot ½ (at2)
Vf 2 Vo2 2ad
Yo 2 m
H .5 m
X 3 m
12
PART 2 FREE RESPONSE SHOW ALL WORK CLEARLY.
INCLUDE UNITS IN SUBSTITUTIONS AND FINAL ANSWER.

• A tennis ball is launched in a horizontal
  direction toward BHS.
• a) Given the values of X, Yo and Vo below, find
  all values and fill in the chart below. LET g
  10 m/s2
• b) How high above the ground will the ball hit
  BHS?

Vf Vo at
d Vot ½ (at2)
Vf 2 Vo2 2ad
Vo 30 m/s
Yo 8m
X 25m
13
PART 2 FREE RESPONSE SHOW ALL WORK CLEARLY.
INCLUDE UNITS IN SUBSTITUTIONS AND FINAL ANSWER.

• A tennis ball is launched in a horizontal
  direction toward BHS.
• a) Given the values of X, Yo and Vo below, find
  all values and fill in the chart below. LET g
  10 m/s2
• b) How high above the ground will the ball hit
  BHS?

Vf Vo at
d Vot ½ (at2)
Vf 2 Vo2 2ad
BHS
Vo 30 m/s
Yo 8m
X 25m
14
PART 2 FREE RESPONSE SHOW ALL WORK CLEARLY.
INCLUDE UNITS IN SUBSTITUTIONS AND FINAL ANSWER.

• A tennis ball is launched in a horizontal
  direction toward BHS.
• a) Given the values of X, Yo and Vo below, find
  all values and fill in the chart below. LET g
  10 m/s2
• b) How high above the ground will the ball hit
  BHS?

Vf Vo at
d Vot ½ (at2)
Vf 2 Vo2 2ad
15
PART 2 FREE RESPONSE SHOW ALL WORK CLEARLY.
INCLUDE UNITS IN SUBSTITUTIONS AND FINAL ANSWER.

• A field goal is attempted as shown below. The
  ball is launched with the Vx and Vy as indicated
  40 m away from the goalpost. The goal post is 3m
  above the ground.
• a) Find the height of the ball above the ground
  when it reaches the goalpost. LET g 10 m/s2
• Is the field goal good
• Fill in all values describing the field goal
  attempt in the chart?

Vf Vo at
d Vot ½ (at2)
Vf 2 Vo2 2ad
16
(No Transcript)