In a lab experiment, a student is trying to apply the conservation of momentum. two identical balls, each with a mass of 1.0 kg.
roll toward each other and collide. the velocity is measured before and after each collision. the collected data is shown below. which trial shows the conservation of momentum in a closed system?

Trial- 2 shows the conservation of momentum in a closed system.

Step-by-step explanation:

Given: Mass of balls are

Conservation of momentum in a closed system occurs when momentum before collision is equal to momentum after collision.

Now, According to conservation of momentum.

Momentum before collision = Momentum after collision

We will plug each trial to this equation.

Trial 1

Trial 2

Trial 3

Trial 4

We can see only Trial 2 satisfies the princple of conservation of momentum. That is momentum before collison should equal to momentum after collision.

answer: ur mum is gay

the final amount you will pay is $68.04.

the tip is determined by the pre-tax amount, so we calculate the tip based on the original bill, not after we've added sales tax.

to find the tip:

we can divide 54.00 by 100 to get 1% of 54. then we multiply that by 18.

54 / 100 = .54

.54 x 18 = 9.72

tip = 9.72$

to find the tax:

we can divide 54.00 by 100 to get 1% of 54. then we can multiply that by 8 to get 8%.

54 / 100 = .54

.54 x 8 = 4.32

tax= 4.32

now we can add the tip and tax to the bill to get our total.

54 + 9.72 + 4.32 = 68.04

total: $68.04

step-by-step explanation: