Answer:
A ball rolls off the table and free falls to the ground. Which statement accurately describes its acceleration? Its acceleration is downward but remains a constant value as it falls.
Answer:
C) 90 degrees
Explanation:
If we could have an imaginative illustration about what the question is all about.
We could think of the velocity of the river (V_r cosθ) as a horizontal component and the velocity of the boat (V_b sinθ) as the vertical component.
So the velocity of the boat V_b = 2.2 m/s; &
the velocity of the river V_r = 1.1 m/s
∴
The minimum time (which is the shortest time) required for the boat to cross the river is θ = 90°
the time require is:
t = 43.18 sec
Answer:
PE = MGH. 1375 x 9.8 x 2. = 26950 joules
Explanation:
First do 1375 x 9.8 which is MG then times it by 2 which is H
Mass x Gravity x Height
the gravity will always be 9.8
I would love a brainliest
Answer:
The efficiency of the system is 80%.
Explanation:
Given that,
Output force = 2000 N
Distance = 3 m
Input force = 250 N
Distance = 30 m
Suppose we need to find the efficiency of the system
We need to calculate the efficiency of the system
Using formula of efficiency
Put the value into the formula
Hence, The efficiency of the system is 80%.