Answer:
the momentum of player A is greater than player B.
Therefore, Option 2 is correct.
Step-by-Step explanation:
We have been given the velocity of the players and mass of the players.
Player A:
Velocity is 5m/hr
Mass 210 pounds
Player B:
Velocity is 3m/hr
Mass 190 pounds
We have a formula for momentum:
p is momentum
m is mass
v is velocity
We will find momentums for both the players:
Momentum of player A:
on substituting the values we get:
Momentum of player B:
on substituting the values we get:
Hence, the momentum of player A is greater than player B.
Therefore, Option 2 is correct.
Answer:
The gravitational potential energy equals the work needed to lift the object.
Explanation:
here we know that
work done is given as
Potential energy is given as
force due to gravity is given as
now here if we plug in the value of distance and force in the formula of work done then we will have
so here we got
so we can concluded that
The gravitational potential energy equals the work needed to lift the object.
consider the right direction as positive and left direction as negative.
M = mass of the ball = 5 kg
m = mass of stone = 1.50 kg
= initial velocity of the ball before collision = 0 m/s
= initial velocity of the stone before collision = 12 m/s
= final velocity of the ball after collision = ?
= final velocity of the stone after collision = - 8.50 m/s
using conservation of momentum
M + m
= M
+ m
(5) (0) + (1.5) (12) = 5 + (1.50) (- 8.50)
= 6.15 m/s
h = height gained by the ball
using conservation of energy
Potential energy gained by ball at Top = kinetic energy at the bottom
Mgh = (0.5) M
(9.8) h = (0.5) (6.15)²
h = 1.93 m
Answer:
The value of R is .
(B) is correct option.
Explanation:
Given that,
In analyzing distances by apply ing the physics of gravitational forces, an astronomer has obtained the expression
We need to calculate this for value of R
So, The nearest option of the value of R is
Hence, The value of R is .