The car is moving at a speed of 72 km / h. to what value the vehicle speed will decrease and as a result
| December 9, 2020 | education
The car is moving at a speed of 72 km / h. to what value the vehicle speed will decrease and as a result of its deceleration occurring within 20 s with an acceleration of 0.5 m / s.
condition:
Vzero = 72 km / h
time = 20 s
a = 0.5 m / s ^ 2
according to the formula:
1) v = v0 (zero) -at
2) v = 72 * 1000 / 3600-0.5 * 20 = 20-10 = 10 m / s
speed will decrease to 10 meters / second
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