<h2>
Speed of the race car at the end of the run is 97.57 m/s</h2>
Explanation:
We have equation of motion v² = u² + 2as
Initial velocity, u = 0 m/s
Acceleration, a = 11.9 m/s²
Final velocity, v = ?
Displacement,s = 400 m
Substituting
v² = u² + 2as
v² = 0² + 2 x 11.9 x 400
v = 97.57 m /s
Speed of the race car at the end of the run is 97.57 m/s
Answer:
A. Slowing down
Explanation:
The graph is decreasing which means that the speed of the object is no longer at its peak.
Answer:
The ratio of moment of inertia of larger sphere to that of smaller sphere = 4
Explanation:
The moment of inertia of solid sphere is given by I = 2/5MR² where M = mass of sphere and R = radius of sphere.
Radius of smaller sphere = D/2
Radius of larger sphere = 2D/2 = D.
Moment of inertia of smaller sphere I₁ = 2/5M × D²/4 = MD²/10
Moment of inertia of larger sphere I₂ = 2/5M × D² = 2MD²/5
The ratio of moment of inertia of larger sphere to that of smaller sphere = I₂/I₁ = 2MD²/5 ÷ MD²/10 = 10 × 2/5 = 4
The answer is D) Cyclones. I am 100% sure on this one, so yeah. Hope this helps, and good luck. :D
Reaction force/support force/ lift/ buoyancy/ weight depends on situation
