Physics Chapter 7 Projectile Motion Worksheet #1



Physics Chapter 7 Projectile Motion Worksheet #1

Steps to Solve a Projectile Motion Problem:

1) Draw a vector diagram

2) Find the horizontal and vertical components of velocity

3) Solve for each component (horizontal or vertical) separately

• Remember for acceleration: horizontal = 0 and vertical = -9.8 m/s2

• ROT: find time first (using vertical components)

4) Ignore air resistance.

5) Check for units and correct signs

[pic]

Ben kicks a soccer ball at a 38o angle to the ground with an initial velocity of 30 m/s.

a) Draw a vector diagram.

b) What is the horizontal component of the ball’s velocity?

c) What is the vertical component of the ball’s velocity?

d) What will be its horizontal velocity at the top of its trajectory?

e) What will be its vertical velocity at the top of its trajectory?

f) How long does it take the ball to get to the top of its trajectory? (Hint: use vertical components)

g) How long will the ball stay in the air?

h) How high will the ball go?

i) How far will the ball go? (Hint: use horizontal components to find its range)

And more problems….

1) A tennis ball is hit with a velocity of 15 m/s at a 52( angle. Find the following:

a) The horizontal and vertical components of its velocity

b) Its total time in the air

c) Its maximum height

d) Its range

2) A golf ball is hit with a velocity of 25 m/s at a 38(angle. Will it make it to the green that is 75m away?

3) A water balloon is thrown with a speed of 12 m/s at a 78( angle. Will it make it over a 10m wall?

4) Find the angle a soccer ball must be hit to travel 58m when it is kicked with a speed of 17.5 m/s.

-----------------------

O.K. Let’s see how smart you are!

................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download