Which of the following would be true for the vertical velocity (vy) of a projectile? Select 3 that apply. Assume that up is positive. the vertical velocity (vy) is zero at the peak of the projectile's trajectory. the vertical velocity (vy) is always downward the vertical velocity (vy) is constant the vertical velocity (vy) is decreasing on the way up and increasing on the way down. the vertical velocity (vy) is positive on the way up and negative on the way down.

When there is no air resistance what best describes the vectors of a projectile in motion O The acceleration vector and velocity vector are both constant magnitude. The acceleration vector is constant and points straight down. The velocity vector is perpendicular to the trajectory O The acceleration vector is constant magnitude and perpendicular to the trajectory. The velocity vector is at a tangent to the trajectory O The acceleration vector is constant and points straight down. The velocity vector is at a tangent to the trajectory

A cannonball is launched from ground level. The launch angle is 60°, with an initial speed of vi = 120 m/s. How far away does the cannonball land? Express your answer with the appropriate units. HA ? Value Units d = Submit Request Answer

Two velocity vectors are defined as follows: ₁ = 40.0 m/s, 50.0° cw from the +x axis v₂ = 30.0 m/s, 75.0° cw from the -y axis a) b) Sketch the vector ₁ on an x-y grid. Label any relevant angle. Calculate the x- and y-components of ₁. Write the vector in terms of its components using unit vector notation. c) d) e) v₂ – v- Calculate the x- and y-components of the change in velocity defined as A = Write the vector Av in terms of its components using unit vector notation. Sketch the vector A on an x-y grid. Define a relevant angle symbolically whose numerical value you will calculate in the next part. f) g) Calculate the magnitude and direction of the vector Av. h) Finally, write the vector Av in terms of its magnitude and direction. Sketch the vector v₂ on an x-y grid. Label any relevant angle. Calculate the x- and y-components of 7₂. Write the vector ₂ in terms of its components using unit vector notation.

A plane releases a package from an altitude of 300 meters. At the time of release, both the plane and package are moving at 100 meters per second, directed at an angle of 20 degrees below the horizontal. How long is the package in the air? Find the magnitude and direction of the velocity of the package just before impact? Draw a sketch or diagram of the problem. Thank you for your help.

The x-component of a velocity vector that has an angle of 35 ∘ to the +x axis has a magnitude of 4.9 m/s. What is the magnitude of the velocity? Express your answer using two significant figures.   What is the magnitude of the yy-component of the velocity? Express your answer using two significant figures.

Table 1. Shot velocity (V) of the projectile at an angle of 30. Two shots were made for each distance. Column 1 and 2 correspond to the throw from 1 meter away. To determine the velocity of fire of the projectile on the x-axis, use the equation: Vxo = Vo * cos 30°.

If a boat points its prow directly across a river, and its engine has one speed of 8.22 m/s. What is its speed, relative to the river bank, if the river has a velocity of 3.28 m/s? Number Units If the river is 63.4 m wide, how far down stream does it land when it reaches the opposite shore? Number Units

A projectile is launched from ground level at a velocity of 28 m/s and an initial angle of 37 degrees. What is the projectile's velocity the instant before it hits the ground? Include a drawing and all steps. Use the projectile motion equations.

On level ground a shell is fired with an initial velocity of 39.0 m/s at 62.0° above the horizontal and feels no appreciable air resistance. ▼ Submit Request Answer Part D How far from its firing point does the shell land? Express your answer using three significant figures. 1 = Submit Part E Value ah, av = μA Submit Part F Request Answer At its highest point, find the horizontal and vertical components of its acceleration. Enter your answers numerically separated by a comma. 15. ΑΣΦ Units Request Answer ? Pearson ? m/s²