Question

1. A gun was fired to a target 100 m away. If the horizontal velocity of the bullet when it left the gun iş 148 m/s. how
ill it take the bullet to reach the target?
a. 9.8 s
b. 1.48 s
C. 0.676 s
d. 4.52 s
2. Which of the following is a unit of energy?
a. N
b. J
c. N/m
d J/s
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Answer 1

Answer:

1) Option A

2) Option B

Explanation:

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Answer 2

Answer:

1. The bullet takes 0.676 s to reach the target.

Solution:

Displacement (d) = 100 m

Velocity of bullet (v) = 148 m/s

Time taken by bullet to reach the target (t) =?

We have,

v = d/t

or, 148 = 100/t

or, 148t = 100

or, t = 100/148

Therefore, t = 0.676 s.

2. Joule (J) is the SI unit of energy because energy is the capacity to do work.