FreeNotes
When a 100 g ball is released from rest and another is thrown downward with a velocity of 10 m/s, both balls experience the same acceleration due to gravity (9.8 m/s²). This is because the acceleration due to gravity is constant for all objects near Earth’s surface, regardless of their mass or initial velocity. While … Read more
When two stones, one of 10 kg and the other of 1 kg, are dropped from a height of 1 km, they will hit the ground with the same velocity, assuming no air resistance. This is because the acceleration due to gravity (9.8 m/s²) acts equally on both stones, regardless of their mass. The difference … Read more
The accelerator pedal in a car controls acceleration, increasing the speed of the car. When the pedal is pressed, the car accelerates, causing it to move faster. The brake pedal is used for deceleration, slowing the car down. Pressing the brake causes negative acceleration, reducing the car’s speed. Additionally, the clutch in manual cars and … Read more
A distance-time graph for a motorcyclist that forms a straight, sloped line indicates that the motorcyclist is moving at a constant speed. This is because the distance covered increases uniformly with time, meaning there is no change in speed over time. The steeper the slope of the line, the higher the speed of the motorcyclist. … Read more
In daily life, there are several instances of acceleration in different directions. a. Acceleration in the direction of motion occurs when a car accelerates along a straight road, increasing its speed. b. Acceleration against the direction of motion happens when a car brakes to slow down, resulting in negative acceleration. c. Acceleration is zero and … Read more
Yes, it is possible for a car moving to the right to have acceleration directed to the left. This situation occurs when the car is decelerating, meaning it is slowing down. The car’s velocity is directed to the right, but the acceleration is directed to the left, opposing the motion. This leftward acceleration acts as … Read more
Yes, it is possible to accelerate an object without speeding it up or slowing it down. This happens in cases of uniform circular motion. In this type of motion, an object moves in a circular path, and while its speed remains constant, its direction of motion changes continuously. The change in direction requires a centripetal … Read more
When a stone is tied to a string and whirling in a circle, its velocity at any instant is tangent to the circular path at the point where the stone is located. This means that the stone’s velocity is directed in the direction it would continue moving if it were to break free from the … Read more
A boy can have zero displacement while covering a non-zero distance in two cases. First, if he walks in a straight line and then returns to the starting point, his displacement will be zero because he ends up where he started, even though the distance covered is the total length of the path he walked. … Read more
The Ferris wheel has rotational motion as it rotates around a central axis. This means the wheel itself moves in a circular path. The riders experience circular motion, where they move along the wheel’s circular path. As the wheel turns, their position changes continuously along the curve, and they stay at a constant distance from … Read more