Question 59:
A car is moving on a straight road with uniform acceleration. The speed of the car varies with time as follows :
Time (s) : 0 2 4 6 8 10
Speed (m/s) : 4 8 12 16 20 24
Draw the speed-time graph by choosing a convenient scale. From this graph :
(i) Calculate the acceleration of the car.
(ii) Calculate the distance travelled by the car in 10 seconds.
Lakhmir Singh Physics Class 9
Answers
Answered by
7
Answer:
Explanation:
a = (v-u) / t
where v is final velocity
v = displacement / time
u is initial velocity
Answered by
8
Answer:
(i) 2 meter per squared second
(ii) 40 meter
Explanation:
(i) We know the formula for acceleration i.e,
A = V/T
A = acceleration
V = Velocity difference between two intervals
T = Time difference
A = 4/2 =2 meter per squared second
(ii) If we can know the speed and the time taken we can easily know the distance travelled,
D= S x T
D= Distance
S= Speed
T= Time
D= 4 x 10 = 40 meter
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