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, ![v_j = 5.6 \ m/s](https://tex.z-dn.net/?f=v_j%20%3D%205.6%20%5C%20m%2Fs)
The change in the kinetic energy of the canister is equal to net work done on the canister by 3.9 N.
ΔK.E = ![W_{net}](https://tex.z-dn.net/?f=W_%7Bnet%7D)
ΔK.E ![= K.E_f -K.E_i](https://tex.z-dn.net/?f=%3D%20K.E_f%20-K.E_i)
The initial kinetic energy of the canister;
![K.E_i = \frac{1}{2} mv_i^2\\\\K.E_i = \frac{1}{2} m(\sqrt{v_i^2 +v_j^2 + v_z^2}\ )^2\\\\K.E_i = \frac{1}{2} *1.9(\sqrt{3.9^2 +0^2 + 0^2}\ )^2 = 14.45 \ J](https://tex.z-dn.net/?f=K.E_i%20%3D%20%5Cfrac%7B1%7D%7B2%7D%20mv_i%5E2%5C%5C%5C%5CK.E_i%20%3D%20%5Cfrac%7B1%7D%7B2%7D%20m%28%5Csqrt%7Bv_i%5E2%20%2Bv_j%5E2%20%2B%20v_z%5E2%7D%5C%20%20%29%5E2%5C%5C%5C%5CK.E_i%20%3D%20%5Cfrac%7B1%7D%7B2%7D%20%2A1.9%28%5Csqrt%7B3.9%5E2%20%2B0%5E2%20%2B%200%5E2%7D%5C%20%20%29%5E2%20%3D%2014.45%20%5C%20J)
The final kinetic energy of the canister;
![K.E_f =\frac{1}{2} mv_j^2 \\\\K.E_f = \frac{1}{2} m(\sqrt{v_i^2 +v_j^2 + v_z^2}\ )^2\\\\K.E_f = \frac{1}{2} *1.9(\sqrt{0^2 +5.6^2 + 0^2}\ )^2 = 29.79 \ J](https://tex.z-dn.net/?f=K.E_f%20%3D%5Cfrac%7B1%7D%7B2%7D%20mv_j%5E2%20%5C%5C%5C%5CK.E_f%20%3D%20%5Cfrac%7B1%7D%7B2%7D%20m%28%5Csqrt%7Bv_i%5E2%20%2Bv_j%5E2%20%2B%20v_z%5E2%7D%5C%20%20%29%5E2%5C%5C%5C%5CK.E_f%20%3D%20%5Cfrac%7B1%7D%7B2%7D%20%2A1.9%28%5Csqrt%7B0%5E2%20%2B5.6%5E2%20%2B%200%5E2%7D%5C%20%20%29%5E2%20%3D%2029.79%20%5C%20J)
ΔK.E = 29.79 J - 14.45 J
ΔK.E =
= 15.34 J
Therefore, the work done on the canister is 15.34 J.
Answer:
Hello There!!
Explanation:
The answer is False.
hope this helps,have a great day!!
~Pinky~
i will say that 32.2m s2 bt am not sure
Answer:
shirt is little attached to the body, it can come off and fly away
Explanation:
In electrostatics, charges of different signs attract and charges of the same sign repel.
In this case, when a negative charge is placed on it, both the inventor and the shirt are charged, therefore there is a repulsive force, also there is an attraction between the positive charge of the roof attracts the negative charge, such as the shirt. of weak the two forces not greater than the resistance of the walk.
As the shirt is little attached to the body, it can come off and fly away