0.008 t^2 = 2
solve for t. i’ve tried a couple of times and gotten different answers.

T=√250 or ≈15.81

Explanation:

by dividing both sides by .008, you eliminate .008 on the left side and get 2÷.008=250 on the right. to eliminate the ^2 on T, you need to square root both sides, so on the left it's √T^2=T, and on the right it's √250, or roughly 15.81.

(newtons first law)

conservation of momentum law states :

momentum before collision = momentum after collision

momentum p (kg-m/s)= mass * velocity

say moving car=1 000 kg, velocity = 10 m/s then p = 1 000*10= 10 000 kg-m/s

say still car = 2 000 kg, velocity = 0 m/s then p = 2 000* 0 = 0 kg-m/s

total momentum prior to collision = 10 000 + 0 = 10 000 kg-m/s

momentum after collision = 10 000 kg-m/s

mass now = 1 000 kg+2 000 kg = 3 000 kg

10 000 = 3 000 kg* velocity m/s

10 000/3 000 = velocity

3.33 m/s = velocity after collision

an impulse is a force applied over time , momentum is exclusive of external forces and a perfect collision is implied