Two airplanes leave an airport at the same time. The velocity of the first airplane is
700 m/h at a heading of 69.8
◦
. The velocity
of the second is 620 m/h at a heading of 107◦
.
How far apart are they after 1.9 h?
Answer in units of m.

Which of the following quantities are units of momentum? (there could be more than one correct choice.) a)n m b) kg s/m c) kg m/'s d)n-s 12 points] e) kg m2/s2

In a good thermo flask the main cause of heat loss is

Aplayground merry-go-round has a radius of 4.6 m and a moment of inertia of 200 kg-m2 and turns with negligible friction about a vertical axle through its center. a child applies a 26.0 n force tangentially to the edge of the merry-go-round for 15.0 seconds. if the merry-go-round is initially at rest, how much work did the child do on the merry-go-round?