Question

Explain how energy derive from meat got into meat.
Calculate the kinetic energy of arrow mass 0.9kg moving with a velocity of 15m/s.

Answer 1

Explanation:

• Given : M = 0.9 kg
• V = 15m/s
• To find : K.E

• We know that
• K.E = 1/2mv²
• K.E = 1/2×0.9×15²
• K.E = 0.45 × 225 ( Divide 0.9 by 2)
• K.E = 101.25 J

• Hope It helps you

• Thanks

Answer 2

Answer:

We can walk because of friction between surface and legs. Vehicles move and stop because of the friction of the brakes and the tires. Writing with pen requires friction and also rubbing with an eraser uses friction. Airplanes can fly and move in the air because of friction in the air called drag or air resistance.