physics help need done soon please ?
An 8 g bullet is fired into a 319 g block that
is initially at rest at the edge of a frictionless
table of height 1.1 m. The bullet remains in
the block, and after impact the block lands
1.7 m from the bottom of the table. Find the initial speed of the bullet. The
acceleration due to gravity is 9.8 m/s ^2
.
Answer in units of m/s.
A 4.15 g bullet is fired vertically into a 1.98 kg
block of wood.
The bullet gets stuck in the block, and the
impact lifts the block 0.074 m up. (That is,
the block — with the bullet stuck in it — rises
0.074 m up above its initial position, and then
falls back down.)
Given g = 9.8 m/s ^2
. What was the initial
velocity of the bullet?
Answer in units of m/s
A rocket is fired vertically upward. At the
instant it reaches an altitude of 2720 m and a
speed of 296 m/s, it explodes into three equal
fragments. One fragment continues to move
upward with a speed of 250 m/s following the
explosion. The second fragment has a speed
of 476 m/s and is moving east right after the
explosion.
What is the magnitude of the velocity of
the third fragment?
Answer in units of m/s.