In 0.5 seconds, a projectile goes from 0 to 300 m/s. What is the acceleration of this projectile? Round to the whole number.

Awheel rotates without friction about a stationary horizontal axis at the center of the wheel. a constant tangential force equal to 82.0 n is applied to the rim of the wheel. the wheel has radius 0.150 m . starting from rest, the wheel has an angular speed of 12.8 rev/s after 3.88 s. what is the moment of inertia of the wheel?

Idon’t quite understand this problem

When does your body conduct current more readily?