An acceleration of -2 m/s^2 means that the velocity of an object is decreasing by 2 meters per second every second. The negative sign indicates that the acceleration is in the opposite direction of the velocity.
The acceleration of the car can be calculated using the formula: acceleration = (change in velocity) / time. In this case, the change in velocity is 40 m/s and the time is 80 seconds. Therefore, acceleration = 40 m/s / 80 s = 0.5 m/s². So, the correct answer is A. 0.5 m/s².
The net force on the dragster is 28,800 N (900 kg * 32.0 m/s^2). This force acts in the direction of acceleration, which is west.
Force = mass x acceleration. I'll let you do the math.
The net force on the skateboard is 4 N. This is calculated using the equation F = m * a, where F is the force, m is the mass (2 kg), and a is the acceleration (2 m/s^2).
The condition would be if the inclined plane is frictionless and the body is subject only to the force of gravity. In this case, the acceleration of the body down the incline would be equal to the acceleration due to gravity, which is approximately 9.8 m/s^2. If the acceleration is given as 4.9 m/s^2, it implies that there is a net force acting on the body causing it to accelerate at that rate.
acceleration
The acceleration of the car can be calculated using the formula: acceleration = (change in velocity) / time. In this case, the change in velocity is 40 m/s and the time is 80 seconds. Therefore, acceleration = 40 m/s / 80 s = 0.5 m/s². So, the correct answer is A. 0.5 m/s².
5,400 N.
The net force on the dragster is 28,800 N (900 kg * 32.0 m/s^2). This force acts in the direction of acceleration, which is west.
The force required is 70,310 newtons.
10
Acceleration is the rate of change of velocity and is measured in ms2 (meters per second squared). It can also be described as the time it takes for the speed to change.
Force = mass x acceleration. I'll let you do the math.
The net force on the skateboard is 4 N. This is calculated using the equation F = m * a, where F is the force, m is the mass (2 kg), and a is the acceleration (2 m/s^2).
The condition would be if the inclined plane is frictionless and the body is subject only to the force of gravity. In this case, the acceleration of the body down the incline would be equal to the acceleration due to gravity, which is approximately 9.8 m/s^2. If the acceleration is given as 4.9 m/s^2, it implies that there is a net force acting on the body causing it to accelerate at that rate.
The force is 686 newtons. (Force = mass x acceleration).
If the speed remains the same and the radius is doubled, the centripetal acceleration will be halved. The centripetal acceleration is inversely proportional to the radius, so doubling the radius will halve the acceleration. Therefore, the new acceleration will be 1.5 m/s^2.