What deceleration does a passenger of a car experience if his car, which is moving at 100.0 km h^-1, hits a wall and is brought to rest in 0.1 s? Express the answer in m s^-2.

so easy. just google the electromagnetic waves and it’ll pop up.

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg