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Westkost [7]
2 years ago
11

Select the correct answer.

Physics
1 answer:
kenny6666 [7]2 years ago
8 0

Answer:

A. gravitational force always true.

B, C and D could be true under the correct conditions

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Please help! A net force of 2.0 N acts on a 2.0-kg object for 10 seconds. What is the object’s kinetic energy after that 10 seco
padilas [110]
For Newton's second law, the force F applied to the object of mass m will cause an acceleration a of the body:
F=ma
So, the acceleration is 
a= \frac{F}{m}= \frac{2.0 N}{2.0 kg}=1 m/s^2

The object undergoes through this acceleration for 10 seconds, t=10 s. Since it is an accelerated motion, we can find its final velocity after 10 seconds:
v_f = v_i + at=0 m/s+(1m/s^2)(10 s)=10 m/s
where v_i is the initial velocity of the object, which is zero since it starts from rest.

Finally we can calculate the final kinetic energy of the object, which is given by
K= \frac{1}{2}mv^2= \frac{1}{2}(2.0 kg)(10 m/s)^2=100 J
7 0
3 years ago
C) m1:<br><br> D) m2: <br><br> E) r. <br><br> Please help me I need help now
Nesterboy [21]
A) F  = gravitational force

b) G = universal gravitational constant (6.67 × 10-11 N-m2/kg2)

c) m1 = mass of the body 1

d) m2 = mass of body 2

e) r = radius or distance between the two bodies.

Hope this helps!
6 0
3 years ago
For any string w = w1w2 · · · wn, the reverse of w, written w R, is the string w in reverse order, wn · · · w2w1. For any langua
Nata [24]

Answer:

Attached is a solution.

6 0
3 years ago
A skydiver jumps out of a hovering helicopter, so there is no forward velocity. Ignore wind resistance for this exercise. What i
ipn [44]

Answer:

a = g

Explanation:

in this scenario, the diver is free-falling, hence his acceleration is equal to the pull of gravity

3 0
2 years ago
Read 2 more answers
1.
anastassius [24]

Answer:

from the formula of work done at any angle the formula is Force *distance cosα(tita)

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3 years ago
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