False. Acceleration is the rate of change of velocity over time. It measures how quickly an object's velocity is changing, not its distance.
False. Acceleration can either speed up or slow down an object, depending on the direction of the force applied. If the direction of the force is opposite to the direction of the object's motion, the acceleration will slow down the object.
True. Both speed and acceleration are vector quantities, meaning they include both magnitude and direction in describing the motion of an object.
True. In uniform circular motion, the particle's velocity is tangential to the circular path, and the acceleration is directed radially inward, towards the center of the circular path. This centripetal acceleration causes the change in direction of the particle's velocity, but the magnitude of the velocity remains constant.
False. Acceleration is the rate of change of velocity. Average velocity is the total displacement divided by the total time.
False. Acceleration is the rate of change of velocity over time. It measures how quickly an object's velocity is changing, not its distance.
False. Acceleration can either speed up or slow down an object, depending on the direction of the force applied. If the direction of the force is opposite to the direction of the object's motion, the acceleration will slow down the object.
True. Both speed and acceleration are vector quantities, meaning they include both magnitude and direction in describing the motion of an object.
True. In uniform circular motion, the particle's velocity is tangential to the circular path, and the acceleration is directed radially inward, towards the center of the circular path. This centripetal acceleration causes the change in direction of the particle's velocity, but the magnitude of the velocity remains constant.
False. Acceleration is the rate of change of velocity. Average velocity is the total displacement divided by the total time.
False. In uniform circular motion, the instantaneous acceleration is directed towards the center of the circle, which is called the centripetal acceleration. This acceleration is responsible for changing the direction of the velocity of the particle, even though its speed remains constant.
True. Acceleration is any change in velocity, including a change in direction. So when you change direction, you are indeed accelerating.
though different terminology is used. Motion is thought of in acceleration and velocity. Now, velocity is just the distance covered over an amount of time, or speed. Acceleration is the change in speed. In general terms, any object that is standing still is being acted upon by equal and opposite forces, and if one of those forces was changed, then the object would undergo acceleration. Think of a person holding a coffee cup. Gravity is working on the object to pull it down, and his or her arm is pulling equally in the opposite direction to keep it up. If the person were to let go, there wouldn't be the upward force, and the cup would accelerate towards the Earth, and its "motion" would be changed. TRUE!
False
True. Motion occurs when an object changes its position relative to a reference point. A change in speed indicates a change in the rate of motion, which can result in the object moving at a different pace or direction.
False. Balanced forces do not change an object's direction. Balanced forces only keep an object at rest or in a uniform motion in a straight line. If an object changes direction, unbalanced forces are acting on it.
True. By using the formula F = ma (force equals mass times acceleration), you can calculate the net force acting on an object when you know its mass and acceleration.