The change in velocity is +4 m/s to the right (or -4 m/s to the left).
The object's mass is irrelevant.
Answer: 1.76 Nm
Explanation:
If the force pulls horizontally, this means that the force is tangent to the disk at any point of the string unwinding process, so the distance d is irrelevant.
In this case, the torque is directly given by the product of the force times the distance perpendicular to the center of the disk, which is just the radius, as follows:
τ = F * r = 16 N. (0.11) m = 1.76 Nm
<span>The question is asking us to fill in the gap in: (gap) is a force of attraction that occurs between objects due to their mass.The correct answer is b. gravity. People don't know that gravity works both ways: both objects atract each. The reason why we're more attracted to Earth than Earth is pulled to us is that Earth has a much higher mass - the bigger the mass, the stronger the atraction</span>
Frequency = (speed) / (wavelength) = 20 / 0.5 = 40 per second = 40 Hz.
Answer:
Average speed = 1.3 m/s
Explanation:
Given that a student walks 160 m in 150 s. The student stops for 30 s and then walka 210 m farther in 140 s.
Neglect the time the student stops.
The total distance covered will be
Distance = 160 + 210
Distance = 370 m
The total time of the whole distance journey will be
Time = 150 + 140 = 290 s
The formula for speed is
Speed = distance/time
Speed = 370/290
Speed = 1.276 m/s
Therefore, the average speed is 1.3 m/s approximately
