She is going 66 miles per hour.
As you know, speed is usually measured in miles per hour. The distance between the 88 mile marker and the 121 mile marker is 33 miles. That means Sara’s mom travelled 33 miles in 30 mins. You want to figure out how many miles she travelled in 60 minutes.
If she travelled 33 miles in 30 minutes, and 60 minutes is double 30 minutes, then Sara’s mom was traveling 66 miles per hour.
Answer:Given mass = 4.1kg
Radius = 0.0117m
Velocity V = 8.4m/s
Coefficient of friction = 0.25
Explanation: Below is an attached solution to the problem stated above.
1. The angular acceleration is equal to 524rad/s^2
2. The linear acceleration is equal to 2.45m/s^2
3.the time it takes the ball to begin rolling = 0.98s
4. The distance the ball slides before it begins to roll = 7.05m
Answer:
T= 210.15 N
F= 75.31 N
Explanation:
Let the tension in string be T newton.
According to the question
⇒T×cos21°= mg
⇒T= mg/cos21°
⇒T=20×9.81/cos21
⇒T= 210.15 N
now, the magnitude of horizontal force
F= Tsin21°
⇒F= 210.15×sin21°
=75.31 N
