Light behaves like both waves and particles.
Explanation:
To me, it's option 1
Newton third law states that Every action produces an equal and opposite reaction. Hence, given the fact that the engine is on, it should be producing a constant force every time so, the speed should be constant as the force propelling it is the same
Answer:
16.87 m/s
Explanation:
To find the speed of the car at the top, when the normal force is equal the gravitational force, we just need to equate both forces:


is the centripetal acceleration in the loop:

So we have that:




So, using the gravity = 9.81 m/s^2 and the radius = 29 meters, we have:


The speed of the car is 16.87 m/s at the top.
Answer: D.) 39,200 J
Via the equation of potential energy PE = mgh where m is mass, g is the average gravity on earth and h is the height. In this case m = 400 kg, g = 9.8, h = 10 m thus:

P.E.= 39,200 Joules
Answer:
B) 1
Explanation:
There is not a coefficient before x, so automatically the answer is 1