Answer:
Explanation:
We are asked to find the final velocity. We are given the acceleration, time, and initial velocity, so we can use the following kinematics formula.
In this formula, is the final velocity, is the initial velocity, is the acceleration, and is the time.
The bicycle has an initial velocity of 5.0 m *s⁻¹ or m/s, acceleration of 2 m/s², and a time of 5 seconds.
Substitute the values into the formula.
Solve inside the parentheses.
Add.
The units can also be written as:
The bicycle's final velocity is 15 meters per second.
Answer:
Mass of the second block is 1.4 kg
Explanation:
When a weight (mg) is displaced from its equilibrium position in a spring mass system, a restoring force (kx) will act on the weight.
so, mg = -kx
where, k is a constant
Mass of block () = 0.70 kg
For one spring mass system,
For the two spring mass system,
divide equation 2 by 1
on further rearranging,
So, mass of the second block is 1.4 kg.
Answer:
The work done on the canister is 15.34 J.
Explanation:
Given;
mass of canister, m = 1.9 kg
magnitude of force acting on x-y plane, F = 3.9 N
initial velocity of canister in positive x direction, = 3.9 m/s
final velocity of the canister in positive y direction,
The change in the kinetic energy of the canister is equal to net work done on the canister by 3.9 N.
ΔK.E =
ΔK.E
The initial kinetic energy of the canister;
The final kinetic energy of the canister;
ΔK.E = 29.79 J - 14.45 J
ΔK.E = = 15.34 J
Therefore, the work done on the canister is 15.34 J.
The girls distance is 50 km in 2 hours.
I don’t know the first one but the second one is light and the third one is a satellite