The acceleration is the (final velocity – initial velocity) ÷ time, which is -8 m/s ÷ 2 s = -4 m/s 2. The car has an acceleration of -4 m/s 2. A negative acceleration is called a retardation.

Now I can put in this expression for the final velocity into my time equation. If the acceleration is 9.8 m/s 2 and the distance is 100 meters, this would give a time of 4.52 seconds.

Using this expression for the final velocity, I get the following for the acceleration: Using my values for Δx and Δt, I get an acceleration of 446 m/s 2 or 45.5 g's. That's a pretty large ...

At t 2, the angular velocity is zero, with a non-zero (positive) angular acceleration. At that time, the direction of rotation for BC is changing from CW to CCW. In summary, you should never assume ...