Answer:
velocity = 15m/s
Explanation:
momentum of the object = 480kg/ms
nass of object = 32 kg
velocity of object = ?
momentum = velocity × mass
velocity = momentum / velocity
= 480kg/ms/32kg
= 15m/s
Explanation:
It is known that the relation between force and acceleration is as follows.
F = -ma ............ (1)
Also, acceleration (a) = ......... (2)
The given data is as follows.
v = 0, u = 14 m/s, s = 1
Therefore, putting the values of expression (2) into expression (1) as follows.
F =
=
= 5978 N
thus, we can conclude that net force on the person if he or she is wearing a seat belt and if the air bag deploys is 5978 N.
Answer:
Explanation:
We are told both planets describe a circular orbit around the star S. So, let's approach this problem begining with the angular velocity of the planet P1 with a period :
(1)
Where:
is the velocity of planet P1
is the radius of the orbit of planet P1
Finding :
(2)
(3)
(4)
On the other hand, we know the gravitational force between the star S with mass and the planet P1 with mass is:
(5)
Where is the Gravitational Constant and its value is
In addition, the centripetal force exerted on the planet is:
(6)
Assuming this system is in equilibrium:
(7)
Substituting (5) and (6) in (7):
(8)
Finding :
(9)
(10)
Finally:
(11) This is the mass of the star S
Answer:
V = 10m/s for the final velocity.
S = 10m for distance II.
Explanation:
Given the given information:
5m/s2 acceleration
2 seconds Equals time
Because the vehicle begins at rest, its initial velocity is 0m/s.
The first equation of motion would be used to get the ultimate velocity.
V = U + at
We have by substituting into the equation
V = 0 + 5*2
V = 0 + 10
V = 10m/s.
Now, to find the distance covered, we would use the second equation of motion.
S = ut + ½at²
S = 0*2 + ½*5*2²
S = ½*5*4
S = 20/2
S = 10m
Problem the mount I cough my so the newer I 75.4