<span>g = 9.8 m/s2 and PE = m × g × h.
hope this helps you(:</span>
Answer:
x 
15
Step-by-step explanation:
Answer: m = 10
.........................
Step-by-step explanation:
When the car stops, the speed is zero.
When S = 0, -10t + 45 = 0, t = 4.5.
Hence it will take 4.5 seconds for the car to stop.
Answer:
Use protractor to measure B
I think the measure of a is acute angle
