A car is initially moving at 35 km/h along a straight highway. To pass another car, it speeds up to 135 km/h in 10.5 seconds at a constant acceleration.

(a) how large was the acceleration in m/s ^2

(b) how large was the acceleration, in units go g = 9.80 m/s ^2

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Physics

13 March, 07:16

A car is initially moving at 35 km/h along a straight highway. To pass another car, it speeds up to 135 km/h in 10.5 seconds at a constant acceleration.

(a) how large was the acceleration in m/s ^2

(b) how large was the acceleration, in units go g = 9.80 m/s ^2

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Answers (1)

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Lucas Harmon · Answer 1

Acceleration = (velocity final-velocity initial) / time

where

velocity final = 135 km/hr x 1 hr / 3600 s x 1000m/1km

= 37.5 m/s

velocity initial = 35 km/hr x 1hr / 3600 s x 1000 m/1 km

= 9.72 m/s

a) acceleration = 2.646 m/s^2

b) acceleration in g units = (2.646m/s^2) / (9.8m/s^2)

= 0.27 units

A car is initially moving at 35 km/h along a straight highway. To pass another car, it speeds up to 135 km/h in 10.5 seconds at a constant acceleration.(a) how large was the acceleration in m/s ^2(b) how large was the acceleration, in units go g = 9.80 m/s ^2

A car is initially moving at 35 km/h along a straight highway. To pass another car, it speeds up to 135 km/h in 10.5 seconds at a constant acceleration.

(a) how large was the acceleration in m/s ^2

(b) how large was the acceleration, in units go g = 9.80 m/s ^2