Question

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​

Answer 1

Answer:

both Mr X and Mr Y are correct

6 option c

7 equal to one as distance and displacement are equal in straight line

8 O km per hr

displacement or distanv