Question

POINT
Araply you Vasos. Concept and confider
MOTION
(a) Identify the kind of motion in the following cases:
(0) A car moving with constant speed turning around a curve.
(ii) An electron orbiting around nucleus.
(b) An artificial satellite is moving in a circular orbit of radius 36.000 km
takes 24 hours to revolve around the earth.
Calculate its speed if it
(a) Define average speed
(b) A bus travels a distance of 120 km with a speed of 40 km/h and returns with a speed of 30
km/h Calculate the average speed for the entire journey.
3
Define uniform and non-uniform motion. Write one example for each.
4
What does the odometer of an automobile measure? Which of the following is moving faster?
Justify your answer.
(i) A scooter moving with a speed of 300 m per minute.
(ii) A car moving with a speed of 36 km per hour.
5
A car travels from stop A to stop B with a speed of 30 km/h and then returns back to A with a
speed of 50 km/h. Find
(i) Displacement of the car.
(ii) Distance travelled by the car.
(iii) Average speed of the car.
Velocity-time graph for the motion of an object in a straight path is a straight line parallel to the
time axis.
(a) Identify the nature of motion of the body.
(b) Find the acceleration of the body.
(C) Draw the shape of distance-time graph for this type of motion.
6
7
Draw the shape of the distance-time graph for uniform and non-uniform motion of object. A bus of
starting from rest moves with uniform acceleration of 0.1 ms for 2 minutes. Find
(a) the speed acquired.
(b) the distance travelled.
8
(a) Define uniform acceleration. What is the acceleration of a body moving with uniform velocity?
(b) A particle moves over three quarters of a circle of radius r. What is the magnitude of its
displacement?
9
A bus accelerates uniformly from 54 km/h to 72 km/h in 10 seconds Calculate
(1) acceleration in m/s?
(ii) distance covered by the bus in metres during this interval.
10
A car moves with a speed of 30 km/h- for half an hour, 25 km/h-' for one hour and 40 km/h-' for
two hours. Calculate the average speed of the car.
11 Derive the equation for velocity-time relation (v = u + at) by graphical method.
12
A car is travelling at 20 km/h, it speeds upto 60 km/h in 6 seconds. What is its acceleration?
13
A car accelerates from 6 ms- 16 ms-' in 10 sec, Calculate
(a) the acceleration and (b) the distance covered by the car in that time.
14
A circular track has a circumference of 3140 m with AB as one of its diameter. A scooterist moves
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Answer 1

Answer:

sorry I didn't know the answer