Is there anybody could answer these two questions?
1.n object moves at a constant velocity of 5.5 m/s to
the southwest for an interval of 20 s. Halfway through
this interval, what is the magnitude of its instantaneous
velocity?
1. 11 m/s
2. It can be any value from 0 to 22 m/s.
3. More information is needed.
4. 5.5 m/s
2.A student throws a heavy red ball horizontally from
a balcony of a tall building with an initial speed v0.
At the same time, a second student drops a lighter blue
ball from the same balcony. Neglecting air resistance
, which statement is true?
1. The balls reach the ground at the same instant.
2. The blue ball reaches the ground first.
3. The red ball reaches the ground first.
4. Both balls hit the ground with the same speed.
thanks a lot in advance:)
Is there anybody could answer these two questions?
1.n object moves at a constant velocity of 5.5 m/s to
the southwest for an interval of 20 s. Halfway through
this interval, what is the magnitude of its instantaneous
velocity?
1. 11 m/s
2. It can be any value from 0 to 22 m/s.
3. More information is needed.
4. 5.5 m/s
2.A student throws a heavy red ball horizontally from
a balcony of a tall building with an initial speed v0.
At the same time, a second student drops a lighter blue
ball from the same balcony. Neglecting air resistance
, which statement is true?
1. The balls reach the ground at the same instant.
2. The blue ball reaches the ground first.
3. The red ball reaches the ground first.
4. Both balls hit the ground with the same speed.
thanks a lot in advance:)
