Answer:
Solids
Explanation:
Solids, liquids, and gases all have mass.
Answer:
B. Weight
Explanation:
Weight is the <em><u>force of gravity</u></em> exerted on a <u>body</u>
OR
It's the force exerted on a body by the influence of the earth's gravitational force
Given parameters:
Initial velocity of eraser = 5.0m/s
Time = 7.0s
Unknown:
Final velocity = ?
Solution:
Since we have been given the initial velocity and duration of the throw, we can apply the appropriate motion equation to solve this problem.
V = U - 2gt
where V is the final velocity
U is the initial velocity
g is the acceleration due to gravity = 9.8m/s²
t is the time taken
V = U - gt
V = 5 - (9.8)(7)
V = -63.6 or -64m/s
The velocity is -64m/s
Answer:
The energy of a photon is directly proportional to it's frequency
Divide the distance by the speed:
(18 m) / (42 m/s) = 3/7 s ≈ 0.43 s
