Answer:
318 Earth-pull
Explanation:
Using Newton's law of gravitational force
F = GMm / r²
F is directly proportional to mass
let earth = m
then m .......... Earth-pull
318 m = 318 m × Earth-pull / m = 318 Earth-pull
Answer:
Final speed of security car v = 65 m/s
Explanation:
Given:
Speed of race car u1 = 35m/s
Speed of security car u2 = 5 m/s
Acceleration = 5 m/s²
Find:
Final speed of security car v
Computation:
Assume, they chase S meter
So
S = u1t + [1/2]at²
S = 35t
S = u2t + [1/2]at²
so,
35t = 5t + [1/2](5)t²
t = 12 s
So
v = u + at
v = 5 + 5(12)
Final speed of security car v = 65 m/s
The two kinds of motion are horizontal and vertical
The electromagnetic force will be stronger since the electromagnet get it's force from the battery.
Answer:
Changes in the object's momentum (answer D)
Explanation:
A net force will cause an object to change its velocity, and that will affect the object's momentum, which is defined by the product of the object's mass times its velocity.
So, select the last option (D) in the given list.
