Question

plot the graph of the distance travelled with time. b )which the position of the graph show that the motion of the car is non uniform? c ) which position of the graph show the car is at the rest ? d)which position of the graph show that the motion of the car is uniform. e ) calculatc the speed of l car during uniform motion.

Answer 1

hey your answer is.....
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a) graph is in the image....

b) The position of car from 37km at 9:30pm to 55km at 10:00pm showed non uniform motion....

c)The position of car from 8:15pm to 8:45pm at 25km showed rest position...

d)The position of car from 0km at 7:00pm to 25km at 8:15pm showed uniform motion....and also from 25km at 8:45pm to 37km at 9:30pm it showed uniform motion...

e)Distance travelled in 1st uniform motion
= 25km
Time in 1st uniform motion=1hour 15 min. = 5/4 hours...
speed of car at 1st uniform motion is
= distance/time
= 25÷5/4 = 25 × 4/5 = 5 × 4 = 20km/h

Distance travelled in 2nd uniform motion
= 37-25 = 12km
Time = 45 min. = 3/4 hours..
Speed of car at 2nd uniform motion is
= 12 ÷ 3/4 = 12 × 4/3 = 4 × 4 = 16km/h..

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