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Physics 9 Chapter 2 - Kinamatics -20
1.
1 ms
-1
= ...............kmh
-1
?
a) 360
b) 3.6
c) 36
d) 0.36
2.
How can we convert speed in ms
-1
to kmh
-1
?
a) By subtracting speed in ms
-1
from 3.6
b) By adding speed in ms
-1
and 3.6
c) By multiplying speed in ms
-1
with 3.6
d) By dividing speed in ms
-1
with 3.6
3.
What is the speed 20 ms
-1
in kmh
-1
?
a) 72 kmh
-1
b) 16.4 kmh
-1
c) None of these
d) 23.6 kmh
-1
4.
1 kmh
-1
= ...............ms
-1
?
a) 36
b) 10/36
c) 360
d) 0.36
5.
How can we convert speed in kmh
-1
to ms
-1
?
a) By adding speed in kmh
-1
and 10/36
b) By dividing speed in kmh
-1
with 3.6
c) By subtracting speed in kmh
-1
from 3.6
d) By multiplying speed in kmh
-1
with 10/36
6.
What is the speed 50 kmh
-1
in ms
-1
?
a) 53.6 ms
-1
b) None of these
c) 72 ms
-1
d) 13.88 ms
-1
7.
How can we convert acceleration in ms
-2
to kmh
-2
?
a) By dividing acceleration in ms
-2
with 12960
b) By adding acceleration in ms
-2
and 12960
c) By subtracting acceleration in ms
-2
from 12960
d) By multiplying acceleration in ms
-2
with 1296
8.
How can we convert acceleration in kmh
-2
to ms
-2
?
a) By adding acceleration in kmh
-2
and 12960
b) By dividing acceleration in kmh
-2
with 12960
c) By subtracting acceleration in kmh
-2
from 12960
d) By multiplying acceleration in kmh
-2
with 12960
9.
What is the speed of 80 kmh
-1
in ms
-1
?
a) 5.6 ms
-1
b) 80 ms
-1
c) 800 ms
-1
d) 22.2 ms
-1
10.
What is the speed of 20 kmh
-1
in ms
-1
?
a) 22.2 ms
-1
b) 80 ms
-1
c) 800 ms
-1
d) 5.6 ms
-1
11.
A train slows down from 80 kmh-1 with a uniform retardation of 2 ms-2. How long will it take to attain a speed of 20kmh-1?
a) 5.6 s
b) -2 s
c) 22.2 s
d) 8.3 s
12.
A bicycle accelerates at 1 ms-2 from an initial velocity of 4 ms-1 for 10 s. Find the distance moved by it during this interval of time?
a) 40 m
b) 90 m
c) 30 m
d) 10 m
13.
A car travels with a velocity of 5 ms-1. It then accelerates uniformly and travels a distance of 50 m. If the velocity reached is 15 ms-1, find the acceleration?
a) 2 ms
-1
b) 75 ms
-1
c) 10 ms
-1
d) 3 ms
-1
14.
A car travels with a velocity of 5 ms-1. It then accelerates uniformly and travels a distance of 50 m. If the velocity reached is 15 ms-1, find the time to travel this distance?
a) 2 s
b) 3 s
c) 5 s
d) 10 s
15.
Who was the first scientist to notice that all the freely falling objects have the same acceleration?
a) Galileo
b) Wohler
c) Newton
d) Einstein
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