Answer: D
Explanation:
If Rhea is inspired and not too focused on comparing abilities, Biles is a good role model.
Galileo Galilei is the scientist that improved apon the telescope
Answer:
The right solution is "0.50 m/s²". A further explanation is provided below.
Explanation:
The given values are:
Mass,
m = 50 kg
Speed,
v = 10 m/s
Rolling friction acting backward (south),
f = 10 N
Air resistance acting backward (south),
= 15 N
The total force acting will be:
⇒ 
On substituting the given values, we get
⇒ 
⇒ 
Now,
⇒ 
On substituting the given values, we get
⇒ 
⇒ 
The horizontal acceleration will be "0.50 m/s²" because the (-)ve sign indicates it in south direction.
Answer:
1. d 2.b 3.c 4.d 5. a 6. d
Explanation:
The object's final velocity, using the impulse-momentum theorem, is 20 i +7 j.
<h3>What is kinetic energy?</h3>
- A particle or an item that is in motion has a sort of energy called kinetic energy. An item accumulates kinetic energy when work, which involves the transfer of energy, is done on it by exerting a net force.
- Kinetic energy comes in five forms: radiant, thermal, acoustic, electrical, and mechanical.
- The energy of a body in motion, or kinetic energy (KE), is essentially the energy of all moving objects. Along with potential energy, which is the stored energy present in objects at rest, it is one of the two primary types of energy.
- Explain that a moving object's mass and speed are two factors that impact the amount of kinetic energy it will possess.
Calculate the object's final velocity using the impulse-momentum theorem.
mass of object m = 3 kg
Initial velocity u = 7 j
net force F = 12 i
Time t = 5 s
(1). Impulse J=F t
= 12 i x 5
= 60 Ns i
We know J = m( v-u)
v- u = J / m
= 60 i / 3
= 20 i
v = 20 i + u
= 20 i +7 j
The object's final velocity, using the impulse-momentum theorem, is 20 i +7 j.
To learn more about kinetic energy, refer to:
brainly.com/question/25959744
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