The total distance travelled is 307.5 miles.
<h3>What is the distance covered?</h3>
We know that the distance covered can be obtained from the formula from speed since the motion all took place in the same direction.
Speed = distance/time
distance = speed * time
In the first case;
Distance = 35 mph * 2.5 hours = 87.5 miles
In the second case;
Distance = 55 mph * 4.0 hours = 220 miles
Total distance = 87.5 miles + 220 miles = 307.5 miles
Hence the total distance travelled is 307.5 miles.
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<h2>
a) Acceleration due to gravity on the surface of the Moon is 1.64 m/s²</h2><h2>
b) Acceleration due to gravity on the surface of the Mars is 3.75 m/s²</h2>
Explanation:
a) Acceleration due to gravity

G = 6.67 × 10⁻¹¹ m² kg⁻¹ s⁻²
Mass of moon, M = 7.35 × 10²² kg
Radius of moon, r = 1.73 × 10⁶ m
Substituting

Acceleration due to gravity on the surface of the Moon is 1.64 m/s²
b) Acceleration due to gravity

G = 6.67 × 10⁻¹¹ m² kg⁻¹ s⁻²
Mass of Mars, M = 6.418 × 10²³ kg
Radius of Mars, r = 3.38 × 10⁶ m
Substituting

Acceleration due to gravity on the surface of the Mars is 3.75 m/s²
Answer:
The answer is going to be C.
Explanation:
Trust me. Im an expert in physics
260 joules is hopefully right.
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