Plz solve teh physics questions its urgent?

Question

1) A projectile is launched at 35.0° above the horizontal with an initial velocity of 120 m/s. What is the projectile's speed 3.00 s later?

2) A 45 kg woman is standing in an elevator that is accelerating downwards at 2.0 m/s2. What force (normal force) does the elevator floor exert on the woman's feet during this acceleration?

Answer 1

Some hints

1) You need to separate the velocity into components in the vertical and horizontal directions

Draw a diagram showing the velocity (including angles), and create a right angle triangle with the vertical and horizontal components

In another color, add all the forces to the diagram(i.e. gravity)

Draw a similar diagram, for 3 s later

Note that, because gravity is downward, there is no sideways acceleration, so the horizontal component of velocity will remain the same.

Use kinematic equations to determine the vertical component of the velocity, using a = g, t = 3 and v(initial) = initial component of velocity in vertical direction.