Answer:
a = -5/6 m/s²
Explanation:
v² = u² + 2as
a = (v² - u²) / 2s
a = (0² - 5²) / 2(15)
a = -5/6 m/s²
This assumes the initial velocity was in the positive direction.
Answer:
If the wheelchair is up 7.1 ft. In hight the time of flight should be 0.664 seconds and the distance should be 12.108 ft.
Explanation: I divided the displacement by the time and I used the equation Vx = 20 km/m
Answer:
Least to most elongated: tungsten, copper, aluminum, nylon.
Explanation:
Materials with high Young's modulus are difficult to stretch. σ = Yε and ε = ΔL/L so an object with a high Young's modulus (Y) subject to a certain tensile stress (σ) will have a smaller strain than an object with a smaller Young's 's modulus subject to the same tensile stress. If strain (ε) is smaller, then ΔL will also be smaller.
During phase changes, energy changes are usually involved. For example, when solid dry ice vaporizes (physical change), carbon dioxide molecules absorb energy. Meanwhile, when liquid water becomes ice energy is released.
hope this helps :)
Answer:
Explanation: The equations used are as follows:
By using equation (2), the time needed for the car to come to rest is calculated as follows:
By using equation (1), The total distance traveled in that time would be as:
The revolutions taken by the tire before the car comes to rest would be:
