Answer:
Explanation:
Centripetal acceleration (a) is defined as the square of an object's velocity (V^2) divided by the distance of the object from it's point/axis of revolution (r). So:
which allows us to solve for the velocity:
Answer:
For part 1) correct answer is : a) SB=SN<VB=VN
For part 2) correct answer is : a) SB=SN<VB=VN
Explanation:
We will use the following formula of momentum
momentum after collision
=momentum before collision
=m*u1-(3*m*u2)
As we know u1 = u2 = 20 m/s
Hence,
-2*m*20 = 4*m*v
v = -10 m/s
v being the common velocity of the SUV and car after the collision
As we know that impulse is J = change in momentum = m*(v-u)
And u being initial velocity which is same for the SUV and car
non belted passengers collide with dashboards with a force which is called as a internal force and due to that internal forces the momentum remains constant heance impulse is also same experienced by seatbelted and non seat belated
As mass of SUV is 3 times the mass or car.
Hence the correct option is a) SB=SN<VB=VN
2) There is the same order of rant for force and impulse
As we know that impulse j = F*dt
Hence correct answer. is a) SB=SN<VB=VN
Answer:
At the top of the roller coaster, there is a lot of potential energy. When it comes to the bottom, the roller coaster loses its potential energy and gains kinetic energy as it is going very fast here.
The net force on the rocket is 846400 N.
Answer:
Explanation:
It is known that weight is the influence of gravitational force acting on any mass of the object. So in the present case, the weighing force given is equal to the gravitational force acting on the rocket. Thus, the gravitational force will be acting towards downward direction. But an upward force is required by the rocket for thrusting purpose and that force is given as upward force. So the net force acting on the rocket is the vector addition of all the forces acting on the rocket. As in this case, only upward and downward force is acting on the rocket. The vector addition will be equal to subtraction of downward acting gravitational force from upward force or force provided by engine.
Net force = Engine force - Gravitational force = 890000-43600=846400 N
So the net force acting on the rocket is 846400 N.
The masses of both objects and the distance between their centers.