27) Velocity and time
28) it indicates increasing velocity
29) It is moving in constant velocity which means no acceleration.
Answer:
Explanation:
we know that
The formula to calculate the acceleration is
we have
substitute
The minimum force required to lift the box at constant velocity is determined as 274.4 N.
<h3>
Minimum force required</h3>
The minimum force required to lift the box at constant velocity is the tension in one of the pulleys, and the magnitude is calculated as follows;
2T = mg
where;
- m is mass of the box
- T is the minimum force required
2T = mg
T = mg/2
T = (56 x 9.8)/2
T = 274.4 N
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They use sound waves that bounce off walls, and other things back to them to feel where they are going.
Answer:
Autobus porusza się ze stałą prędkością 54 km/h Oblicz w jakim czasie przebędzie drogę 450 m