Answer:
In the first law, an object will not change its motion unless a force acts on it. In the second law, the force on an object is equal to its mass times its acceleration. In the third law, when two objects interact, they apply forces to each other of equal magnitude and opposite direction.
Explanation:
Answer:
The temperature scale on which water freezes at 0 and boils at 100. Thermal energy that is transferred from one substance to another; moves from warmer to cooler objects. The transfer of heat by direct contact; occurs when energy is transferred by collisions between particles.
Explanation:
Answer:
Yes
Explanation:
Momentum before collision = momentum after collision
m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂
The cars stick together after the collision, so they have the same final velocity.
m₁u₁ + m₂u₂ = m₁v + m₂v
m₁u₁ + m₂u₂ = (m₁ + m₂)v
Plug in values and solve (take Jay Z's direction to be positive):
(1100) (-20) + (1475) u₂ = (1100 + 1475) (7)
u₂ = 27.1 m/s
Yes, Jay Z was speeding.
