5. There is an argument about uniform acceleration between Mr. X and Mr. Y.
Mr. X says “acceleration means that farther you go faster you go”. Mr. Y says
“acceleration means that longer you go the faster you go”. Whose statement
is correct?
a) Mr. X c) Mr. Y
b) Both d) none
6. Choose the wrong statement:
a) Retardation is a vector quantity.
b) Acceleration is a vector quantity.
c) Average speed is a vector quantity.
d) Displacement is a vector quantity.
7. For the motion on a straight line path with constant acceleration the ratio of
the magnitude of the displacement to the distance covered is_____
a) =1 c) ≥ 1
b) ≤ 1 d) <1
8. A car travels 100 km east and then 100 km south. Finally it comes back to the
starting point by the south-east route. Throughout the journey the speed is
constant at 60 km / h. The average velocity for the whole journey if time taken
is 3.3 hours is____
a) 60 km/h c)90 km/h
b) 0 km/h d) 180 km/h
9. The area under the velocity – time graph gives the values of___
a) Distance travelled c) velocity
b) Acceleration d) none
10.Which of the following statements is true?___
a) The object speeds up
b) The object slows down
c) The object moves with a constant velocity
d) The object stays at rest
11.Which of the following is true?
a) The object increases its velocity
b) The object decrease its velocity
c) The object`s velocity stays unchanged
d) The object stays at rest
12.A body moving with uniform acceleration has velocities 20 m/s and 30 m/s
when passing two points A and B. Then the velocity midway between A and B
is______
a) 25 m/s c) 24 m/s
b) 25.5 m/s b) 20 m/s
13.A girl running a race acceleration at 2.5 m/s2
for the first 4s of the race. How
far does she travel in this time?
a) 20 m c) 25 m
b) 10 m d) 20.5 m
14.A body is moving with a uniform velocity of 10 m/s. Find its velocity after 10 s?
a) 10 m/s c) 20 m/s
b) 15 m/s d) 10.5 m/s
15.The velocity of a car is 18 m/s. Express this velocity in km/h?
a) 64.8 km/h c) 70 km/h
b) 64 km/h d) 65 km/h
Answers
Answer:
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