Answer: 4850N
Explanation:
Mass of car = 970 kg
Time = 5 s
Speed = 25 m/s
Average force exerted on the car = ?
Recall that Force is the product of the mass of an object and the acceleration by which it moves
i.e Force = mass x acceleration
(Since, acceleration is the rate of change of velocity or speed per unit time)
i.e Acceleration = Speed / Time
Acc = 25m/s / 5s
Acc = 5m/s^2
Average force = mass x acceleration
Avg force = 970 kg x 5m/s^2
= 4850N
Thus, the average force exerted on the car is 4850 Newton
Answer:
20.25 m
Explanation:
- <u>Centripetal acceleration </u>is given by; the square of the velocity, divided by the radius of the circular path.
That is;
<em><u>ac = v²/r</u></em>
<em> </em><em><u> Where; ac = acceleration, centripetal, m/s², v is the velocity, m/s and r is the radius, m</u></em>
Therefore;
r = v²/ac
= 27²/36
= 20.25 m
Hence the radius is 20.25 meters
Answer:
272.05 K; 489.69 °R; -1.11 °C
Explanation:
Fahrenheit can be converted to degrees Celsius using the following formula:
°C = 5/9 x (°F - 32) = -1.11 °C
The temperature in Kelvin is calculated from the temperature in degrees Celsius as follows:
K = °C + 273.15 = 272.05 K
The temperature on the Rankine scale is calculated from Kelvin as follows:
°R = 1.8K = 1.8(272.05) = 489.69 °R
