# /3 Mickey He hits the puck when it has an initial velocity of 3.5 m/s [East]. The stick touches the puck for 0.250

Question

/3
Mickey He hits the puck
when it has an initial
velocity of 3.5 m/s [East].
The stick touches the puck
for 0.250 seconds and
changes the velocity to
6.75 m/s [East]. What is
the acceleration? show
your work below
Question 2
13
Matt plays badminton. He
serves the birdie with a
velocity of 4.25 m/s [right]
covering a displacement of
5.2 m [forward]. How much
time does this birdie’s trip
take? show your work
below

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1 year 2021-09-04T05:56:10+00:00 1 Answers 0 views 0

## Answers ( )

1. Answer:

130m/s^2 and 1.22s

Explanation:

From V = u+at

Where V, u, a, and t are the final velocity, initial velocity, acceleration and time respectively.

v = 6.75m/s

u = 3.5m/s

t = 0.250secs

a = ?

V = u+at

6.75= 3.5+a(0.250)

6.75-3.5 = 0.250a

3.25=0.250a

Divide both sides by 0.250

3.25/0.250= 0.250a/0.250

a = 130m/s^2

The acceleration of the will be 130 meter per second

Question 2

Speed = distance/time

Given that speed= 4.25m/s

Distance = 5.2m and time = ?

4.25m/s = 5.2m/t

Cross multiply

4.25×t = 5.2

Make t the subject by dividing both sides by 4.25

4.25t/4.25 = 5.2/4.25

t = 1.22s

Hence the time taken will be 1.22 seconds