ΑΣ Sign A. keeping everything grounded on Earth. C. planes not being able to fly into space. B. making tall skyscrapers safe, D.
showing us the stars on a dark night. 2. The Earth's gravity is very important to our lives, but so is the gravity of the sun and the moon. The moon's gravity pulls on the ocean and makes the tides rise and fall . The sun's gravity pulls on the Earth and makes sure our planet doesn't go flying out into space. The sun's gravity keeps all the planets spinning around it, and the Earth's gravity keeps the moon close by. Which of the following best describes how the moon and Earth affect one another? A. The moon's gravity keeps Earth in place, B. The moon's gravity keeps the Earth close and the Earth's gravity affects the tides on by, and the Earth's gravity changes the the moon. moon's orbit. C. The moon's gravity creates tides on Earth, D. The moon's gravity creates earthquakes, and the Earth's gravity keeps the moon in and the Earth's gravity creates place. moonquakes. Vom miatt not be able to dun zahaczatball on Earth but vaunrabably could on the mean Why? There is
2 answers:
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Explanation :
It is given that, the driver accelerates from a stop sign, cruises for 20 s at a constant speed of 60 km/h, and then brakes to come to a stop 40 s after leaving the stop sign.
We know that acceleration is defined as the rate of change of velocity.
Where
dv is the change in velocity, dv = 0 - 60 m/s = -60 m/s
dt is the change in time, dt = 40 s - 30 s = 10 s
So,
From the graph it is clear that, from 30 s to 40 s the car is decelerating. So, at every second within this time the value of acceleration will be same i.e. .
