Question
A race car moving at 157km/hr decelerates at -7.00 m/s^2 to a speed of 75.0km/hr
A) how long did this take?
B) how many meters did the car travel during this deceleration?
I attempted this problem many times and i don't seem to get the correct answer please show all work thank you
A) how long did this take?
B) how many meters did the car travel during this deceleration?
I attempted this problem many times and i don't seem to get the correct answer please show all work thank you
Answers
Henry
Vo = 157km/h = 157000m/3600s = 43.61 m/s
V = 75.0km/h = 75000m/3600s = 20.83 m/s.
a = -7.0 m/s^2
A. V = Vo + a*t
Solve for t.
B. V^2 = Vo^2 + 2a*d
Solve for d.
V = 75.0km/h = 75000m/3600s = 20.83 m/s.
a = -7.0 m/s^2
A. V = Vo + a*t
Solve for t.
B. V^2 = Vo^2 + 2a*d
Solve for d.