Answer:
The articles appearing under "Milestones in Physics" will give an insight into special events or situations that have been decisive for the evolution of Physics
A valve is a flap of tissue that prevents blood from flowing back
The answer is reflection.
The drawing is simple but illustrates the concept beautifully.
Answer:
the two factors are the mass of the objects and the coefficient of friction between them
Explanation:
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<h2>
Time taken is 0.459 seconds</h2>
Explanation:
We have equation of motion v = u + at
Initial velocity, u = 0 m/s
Final velocity, v = 81 km/hr = 22.5 m/s
Time, t = ?
Acceleration, a = 49 m/s²
Substituting
v = u + at
22.5 = 0 + 49 x t
t = 0.459 seconds
Time taken is 0.459 seconds