**Answer:**

**The initial speed of the 1kg block is 8 m/s.**

**Explanation:**

The question simply asks for the initial speed of the 1.00 kg block.

The initial kinetic energy of the 1kg block is = 32 Joules

Using this kinetic energy, and the equation below, we can find the speed of the 1kg block:

Kinetic Energy =

**v = 8 m/s**

**The initial speed of the 1kg block is 8 m/s.**

I think the answer is thymine

Answer: The angular acceleration =

100rads/s^2

Explanation:

Angular acceleration is defined as the angular velocity dividing by the acceleration time.

Given:

Angular velocity of ball = 30rads/s

Acceleration time of the ball = 0.30seconds

Angular acceleration = (30rads/s )/ (0.3 secs)

Angular acceleration = 100rads/s

That's a great idea ! A wind turbine (windmill) or solar panels

on the roof of every WalMart, but don't stop there. Let K-Mart,

Target, Sears, Macy's, 7-11, McDonald's, and Subway in on it too.

In fact, why not place them on the roof of every house and

apartment building too ?

Just one question: Who's going to pay for them ?

_________________________________________________

The biggest single year-round residential use of energy in the

USA is to heat up and keep a ready supply of hot water. So the

single biggest residential use of energy could be eliminated with

a simple solar water heater on the roof of every house. From my

own personal observation, I know that Israel is there now, but here

in the USA, it's apparently not worth the time, effort, or expense ! ? !

Acceleration = change of velocity over the time = (16-4)/8=1.5 m/s^2