Chapter 28, Problem 20PE

### College Physics

1st Edition
Paul Peter Urone + 1 other
ISBN: 9781938168000

Chapter
Section

### College Physics

1st Edition
Paul Peter Urone + 1 other
ISBN: 9781938168000
Textbook Problem

# Suppose a spaceship heading straight towards the Earth at 0.750c can shoot a canister at 0.500c relative to the ship. (a) What is the velocity of the canister relative to the Earth, if it is shot directly at the Earth? (b) If it is shot directly away from the Earth?

To determine

(a)

Suppose a spaceship heading straight towards the Earth at0.750ccan shoot a canister at0.500crelative to the ship. The velocity of the canister relative to the Earth, if it is shot directly at the Earth.

Explanation

Given info:

â€ƒâ€ƒvâ‰ˆ0.750c

â€ƒâ€ƒu'â‰ˆ0.500c

â€ƒâ€ƒcâ‰ˆ3Ã—108Â msâˆ’1

Formula used:

For velocity of the canister observer from earth calculation, the relation between velocities are

â€ƒâ€ƒuâ‰ˆv+u'1+vu

To determine

(b)

Suppose a spaceship heading straight towards the Earth at0.750ccan shoot a canister at0.500crelative to the ship. The velocity of the canister relative to the Earth, if it is shot directly away from the Earth.

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