Answer:
V(car) = V(truck) at t = Dt/2
acceleration = v(car) = D/t^2
Explanation:
acceleration = v(car) = D/t^2
Since the average velocities must be the same, the car's final velocity must be twice the trunk velocity assuming the car start with zero velocity, since acceleration remain the same throughout the journey velocities at half-time point must be equal.
Answer:

Explanation:
initial frequency of revolution is given as

now initial angular speed is



Similarly final angular speed is given as



Now angular acceleration is given as



Answer:
heat reaches to us from the sun through radiation since there is no medium in space, radiation is the major wat heat travels in space.
Answer:
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Explanation:
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B. Polar Molecule
Explanation - polar means that the electrons are not shared evenly. Water (H2O) has two Hydrogen atoms which are positive because they give their electrons away, and one Oxygen atom which is negative because it received the electrons