3. [#663a] Car physics, part 1. A car has a drag coefficient Cd = 0.30, a frontal area of A = 1.9 m² and a mass 1.2 tonnes. The density of air is 1.2 kg.m -3 Fdrag N. i) What is the drag force when it is traveling at v = 110 kph in a straight line? Hint: Retain accurate values until the final calculation, but remember significant figures.

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3. [#663a] Car physics, part 1.
A car has a drag coefficient Cd = 0.30, a frontal area of A = 1.9 m² and a mass 1.2 tonnes. The density of air is 1.2 kg.m
-3
i)
What is the drag force when it is traveling at v =
110 kph in a straight line?
Fdrag
N.
Hint: Retain accurate values until the final calculation, but remember significant figures.
X Incorrect
4. [#663b] Car physics, part 1.
A car has a drag coefficient C= 0.30, a frontal area of A = 1.9 m² and a mass 1.2 tonnes. The density of air is 1.2 kg.m
-3
ii)
What power (in kilowatts) is required to overcome the drag force at this speed? Pdrag
kW.
Hint: Retain accurate values until the final calculation, but remember significant figures.
X Incorrect
Transcribed Image Text:3. [#663a] Car physics, part 1. A car has a drag coefficient Cd = 0.30, a frontal area of A = 1.9 m² and a mass 1.2 tonnes. The density of air is 1.2 kg.m -3 i) What is the drag force when it is traveling at v = 110 kph in a straight line? Fdrag N. Hint: Retain accurate values until the final calculation, but remember significant figures. X Incorrect 4. [#663b] Car physics, part 1. A car has a drag coefficient C= 0.30, a frontal area of A = 1.9 m² and a mass 1.2 tonnes. The density of air is 1.2 kg.m -3 ii) What power (in kilowatts) is required to overcome the drag force at this speed? Pdrag kW. Hint: Retain accurate values until the final calculation, but remember significant figures. X Incorrect
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