Answer:
10 m/s
Explanation:
Momentum before collision = momentum after collision
m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂
(8 kg)(8 m/s) + (6 kg)(6 m/s) = (8 kg)(5 m/s) + (6 kg) v
64 kg m/s + 36 kg m/s = 40 kg m/s + (6 kg) v
60 kg m/s = (6 kg) v
v = 10 m/s
The properties of whatever it's waving through do.
For mechanical waves, like sound, slinky, and seismic waves, it's the mechanical
properties of the medium, like density, elasticity, and viscosity.
For electromagnetic waves, like light and radio ones, it's the electrical properties
of the medium, like the electrostatic permittivity, and the magnetic permeability.
Answer:
a) t = 12 minutes
it takes him 12 minutes to complete the trip.
b) it is not reasonable.
Explanation:
a) Velocity is a vector quantity which is defined as the displacement per unit time.
velocity = displacement/time
time t = displacement/ velocity
Let east be the positive x axis.
A cyclist rides 16.0 km east, then 8.0 km west, then 8.0 km east, then 32.0 km west, and finally 11.2 km east
displacement d = 16 - 8 +8 -32 +11.2 = -4.8km
Velocity = 24km/hr
Time t = |-4.8|/24
t = 0.2 hr × 60 minutes/hr = 12 minutes
t = 12 minutes
it takes him 12 minutes to complete the trip.
b) It is not reasonable because moving at that speed the actual time it will take the cyclists to complete the total distance travelled (75.2km) would be more than 12 minutes.
Answer:
friction is acting on the ball since it is rolling across the floor. the ball rolling across the floor is going to keep moving until something causes it to stop and the something is the blue ball since the blue ball is in place because of gravity. The blue ball probably went rolling off slowly since the red ball which was moving applied it's force onto the blue ball. The student is wrong since it was the Red ball the exerted force on the Blue ball
Explanation: