The answer is hopefully if i'm correct is 5 or 6 seconds
Answer:
a) Instantaneous rate at which the force does work on the object = -6 W
b) 
Explanation:
a) Given that
and
Instantaneous rate at which the force does work on the object is called power.
Power is the dot product of force and velocity.
Instantaneous rate at which the force does work on the object = -6 W
b) Here given that 
Power = -12 W
Answer:
I think d. is the answer I'm not conform
A car starts from rest and accelerates at 9 m/s². After 240 m. the final speed is 66 m/s.
<h3>What is Uniformly Accelerated Motion?</h3>
Uniformly Accelerated Motion is the motion of an object where the acceleration is constant.
A car starts from rest, that is, its initial speed is 0 m/s. It accelerates at 9 m/s². We can find the final speed after 240 m using the following kinematic equation.
v² = u² + 2 × a × s
v² = (0 m/s)² + 2 × (9 m/s²) × 240 m
v = 66 m/s
where,
- v is the final speed.
- u is the initial speed.
- a is the acceleration.
- s is the displacement.
A car starts from rest and accelerates at 9 m/s². After 240 m. the final speed is 66 m/s.
Learn more about Uniformly Accelerated Motion here: brainly.com/question/10178440
Mass = Density * Volume
Density = 19.3 g/cm³
Volume = 24 cm³
Mass = Density * Volume = 19.3 g/cm³ * 24 cm³ = 463.2 g
Mass = 463.2 g
