physics

A model rocket leaves the ground, heading straight up at 45m/s .
Part A
What's its maximum altitude?
Express your answer to two significant figures and include the appropriate units.

Part B
Find its velocity at 1 s?
Express your answer to two significant figures and include the appropriate units.

Part C
Find its altitude at 1 s?
Express your answer to two significant figures and include the appropriate units.

Part D
Find its velocity at 4 s?
Express your answer to two significant figures and include the appropriate units.

Part E
Find its altitude at 4 s?
Express your answer to two significant figures and include the appropriate units.

Part F
Find its velocity at 7 s?
Express your answer to two significant figures and include the appropriate units.

Part G
Find its altitude at 7 s?
Express your answer to two significant figures and include the appropriate units.

asked by Anonymous
  1. well, you know that the height is

    y = 45t - 4.9t^2

    Now just use that parabola to answer the questions.

    posted by Steve

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    A rocket carrying a satellite is accelerating straight up from the earth's surface. At 1.25 s after liftoff, the rocket clears the top of its launch platform, 69 m above the ground. After an additional 4.80 s , it is 1.00 km above
  2. physics

    You pick up a 3.2 kg can of paint from the ground and lift it to a height of 1.4 m . Part A How much work do you do on the can of paint? Express your answer to two significant figures and include the appropriate units. Part B You
  3. Physics

    A rocket-powered hockey puck moves on a horizontal frictionless table. The figure below shows the graphs of vx and vy, the x- and y-components of the puck’s velocity. The puck starts at the origin. The graph of the X-velocity is
  4. PHYSICS

    PLEASE HELP WITH PART E AND F THANKS!! Find the direction and magnitude of the following vectors. A⃗ =( 22 m )x^+( -15 m )y^ Express your answer in degrees using three significant figures. θA = THE ANSWER IS-34 Part B Express
  5. physics

    Find the direction and magnitude of the following vectors. A⃗ =( 22 m )x^+( -15 m )y^ Express your answer in degrees using three significant figures. θA = Part B Express your answer in meters using two significant figures.
  6. Physics

    An athlete performing a long jump leaves the ground at a 27.1 ∘ angle and lands 7.73 m away. 1). What was the takeoff speed? Express your answer using three significant figures and include the appropriate units. 2).If this
  7. physics

    A model rocket is launched straight upward. Its altitude y as a function of time is given by y=bt−ct2, where b = 80m/s , c = 4.9m/s2 , t is the time in seconds, and y is in meters. 1. Use differentiation to find a general
  8. Physics

    Mars, on average, is 140 million miles from the Sun. 1 mi = 1609 m . Part #1: Express the distance between Mars and the Sun in meters using powers of 10. Express your answer using two significant figures. Answer: d =2.25×10^11 m
  9. physics

    A model rocket leaves the ground, heading straight up at 47 m/s. (a) What is its maximum altitude? m What are its speed and altitude at each of the following times? (b) 1 s m/s m (c) 4 s m/s m (d) 8 s m/s m
  10. Ashley

    An athlete performing a long jump leaves the ground at a 27.1 ∘ angle and lands 7.73 m away. 1). What was the takeoff speed? Express your answer using three significant figures and include the appropriate units. 2).If this

More Similar Questions