4. [#663b] Car physics, part 1. A car has a drag coefficient Ca = 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 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. Enter answer here 5. [#664a] Car physics, part 2. A car has a drag coefficient Ca = 0.30, a frontal area of A = 1.9 m² and a mass 1.2 tonnes. It has a coefficient of rolling resistance, Cr, = 0.012. The rolling resistance is a force F, = C,N, where N is the normal force. i) What is F, when traveling at v = 110 kph on a horizontal road? F=, N, Hint: Retain accurate values until the final calculation, but remember significant figures. Enter answer here 6. [#664b] Car physics, part 2. Using the information from #664a above: ii) What power (in kilowatts) is required to overcome F, at this speed? P=. kW. Hint: Retain accurate values until the final calculation, but remember significant figures. Enter answer here

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4. [#663b] Car physics, part 1.
A car has a drag coefficient Ca = 0.30, a frontal area of A =
1.9 m- 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.
Enter answer here
5. [#664a] Car physics, part 2.
A car has a drag coefficient Ca = 0.30, a frontal area of A = 1.9 m² and a mass 1.2 tonnes. It has a coefficient of rolling
resistance, C, = 0.012. The rolling resistance is a force F, = C,N, where N is the normal force.
%3D
i) What is F, when traveling at v
110 kph on a horizontal road? F=
N,
Hint: Retain accurate values until the final calculation, but remember significant figures.
Enter answer here
6. [#664b] Car physics, part 2.
Using the information from #664a above:
ii) What power (in kilowatts) is required to overcome F, at this speed? P=
kW.
Hint: Retain accurate values until the final calculation, but remember significant figures.
Enter answer here
Transcribed Image Text:4. [#663b] Car physics, part 1. A car has a drag coefficient Ca = 0.30, a frontal area of A = 1.9 m- 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. Enter answer here 5. [#664a] Car physics, part 2. A car has a drag coefficient Ca = 0.30, a frontal area of A = 1.9 m² and a mass 1.2 tonnes. It has a coefficient of rolling resistance, C, = 0.012. The rolling resistance is a force F, = C,N, where N is the normal force. %3D i) What is F, when traveling at v 110 kph on a horizontal road? F= N, Hint: Retain accurate values until the final calculation, but remember significant figures. Enter answer here 6. [#664b] Car physics, part 2. Using the information from #664a above: ii) What power (in kilowatts) is required to overcome F, at this speed? P= kW. Hint: Retain accurate values until the final calculation, but remember significant figures. Enter answer here
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