Tick () the correct answers.
1. Which of these does not show periodic motion?
a. a girl swinging
b. bob of a pendulum
c. a moving train d. strings of a guitar
2. If you change the unit of speed from
km/hr to m/sec you will have to multiply with
60%
70%
100
GOAL RIACHARE
d. g/sec
. 5/18
b. 18/5
C. 20/11
d. 11/20
3. What is the unit of speed?
a. m/sec b. m/hr
C. kg/hr
4. A force that acts on a body moving in a circular path and is directed
towards the centre around which the body is moving is called a
b. frictional force
a. centrifugal force
d. magnetic force
c. centripetal force
What kind of line does the distance-time graph of uniform motion
show?
a curved
b. bell-shaped
c. diagonal
d. inverted bell
6. If you move 50 min 10 sec, what is your speed?
a. 5 m/sec b. 10 m/sec c. 12 m/sec d. 15
7. A car travels 400 min 40 sec. What is the speed of the car?
a. 15 m/sec b. 10 m/sec c. 12 m/sec d. 14
8. Which instrument is used to measure the distance travelled by
vehicle
a. speedometer
b. odometer
c. distance meter
d. distance gauge
Answers
Answered by
7
Answer:
1. c
2. 5/18
3.m/sec
4.centripetal force
5.diagonal
6.10 m/sec
7.10 m/sec
8. odometer
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