Answer: 100 m
Explanation:
Initial speed(u) = 40 m/s
Final speed(v) = 0 m/s
Acceleration = v-u/t
=> 0-40/5
=> 8 m/s^2
Displacement= s
=> 2as = v^2-u^2
=> 2(-8)(s) = 0 - (40)^2
=> -16s = -1600
s = 100 m
We can say the vehicle move 100 meters before stopping.
Answer: Option <em>a.</em>
Explanation:
Kepler's 2nd law of planetary motion states:
<em>A line segment joining a planet and the Sun sweeps out equal areas during equal intervals of time.</em>
It tells us that it doesn't matter how far Earth is from the Sun, at equal times, the area swept out by Earth's orbit it's always the same independently from the position in the orbit.
