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But 3 seconds later, at the bottom of the slope, its speed is 22 m/s. What is its average acceleration?
The ball and the rock hits the ground a distance of 30m apart.
What is the horizontal velocity of the ball thrown?
the Earth at a speed of 5.7 km/s.
Determine the satellite’s altitude above
the surface of the Earth. Assume the
Earth is a homogeneous sphere of radius
6370 km and mass 5.98 × 1024 kg. The
value of the universal gravitational constant
is 6.67259 × 10−11 N · m2
Answer in units of km.
What would you weigh if the Earth were
two times as massive as it is and its radius
were three times its present value?
Answer in units of N.
The ball attains a maximum height of 10m above the top of the building before striking the ground.
If air resistance is neglected, sketch the trajectory of the motion of the ball. Hence, calculate the vertical component of the velocity at the point of projection and the final velocity of the ball at the ground level.