Answer:
-1.67 m/s
Explanation:
We can solve this problem by using the law of conservation of momentum: in fact, since the system is isolated (no external forces, since the ice is frictionless), the total momentum of Evelyin and Lily must be conserved.
The total momentum before is zero, since they are both at rest:
The total momentum after is:
where
m = 48.3 kg is Lily's mass
M = 57.4 kg is Evelyin's mass
V = 1.4 m/s is Evelyn's velocity
v is the Lily's velocity
Since momentum is conserved,
And so
Solving for v, we find Lily's velocity:
And the negative sign indicates that her direction is opposite to Evelyn's direction.
Hello!
To calculate the speed(velocity) of a moving object, we can divide the displacement by the time interval in which the displacement occurred.
This is based off the formula:
v=d/t
Where v=velocity, d=total displacement, t=Time interval
Hope this helps. Any question please just ask. Thank you kindly.
A bell or a siren or a ring in somewhere
A, and D are two correct answers im not sure about the third sorry
Cups
teaspoon
tablespoon
liters
milliliters
gallons
pints
tons
inches