Answer:
4
Explanation:
friction
weight
normal reaction
force to overcome inertia
Answer:
0.05081 kg
Explanation:
= Mass of blood
= 0.435 m/s
= Mass of subject and pallet = 54 kg
= Velocity of subject and pallet = 
In this system the linear momentum is conserved so,

The mass of blood is 0.05081 kg
Positive electric charge and found inside the nucleus
Answer:
It should be 92 mi/h
Explanation:
Because there is no air resistance there is nothing pushing against it to slow it down, so only the initial force and gravity are acting on the ball
Answer:
The inner planets are smaller and rockier
Explanation:
Astronomers divide the planets into two groups in Solar system, the inner planets and outer planets. The inner planets are smaller and rockier and it is closer to the sun. The outer planets are larger , further far away and made of gas
The inner planets are Mercury, Venus , Earth and Mars. The outer planets Jupiter , Saturn , Uranus and Neptune comes after an asteroid belt. In some other planetary systems the gas are close to the sun.
particles in a disk of gas and dust will form Planets. If they orbit the star they are colliding and sticking. The stars wind blows away their gases . So the nearest planets to starts are rockier.