Mehdi R.

A sled is given an initial speed of 15 𝑚/𝑠 up a snow-covered hill. The hill makes an angle of 30° with respect to horizontal, and the coefficient of kinetic friction between the snow and the sled... more

You throw a baseball directly upward at time 𝑡=0 at an initial speed of 12.1 m/s. What is the maximum height the ball reaches above where it leaves your hand? Ignore air resistance... more

A mass is hanging from a spring that is moving as v(t) =1.7sin(9.8t) so the velocity is at 0 m/s on a periodic basis. For example, when t =0s, the velocity is 0m/s. What is the ACCELERATION of the... more

A hot air ballon is traveling vertically downward at a constant speed of 7 m/s. When it is 30.1 m above the ground, a small package is released from the balloon. What is the package’s velocity just... more

A crossbow arrow is accidentally shot straight up into the air from the ground with a velocity of 52 m/s.a) How long is the arrow in the air?b) What will be the maximum height of the arrow?c) How... more

plz ans with solution.........plz ans quickly with solution......................................................................

If f(x)=2x2−2x+6, find f'(−5).   Use this to find the equation of the tangent line to the parabola y=2x2−2x+6 at the point (−5,66). The equation of this tangent line can be written in the... more

Writing equations of linear functions, please help! The chart below is asking what the slope, y intercept, and equations are. In the first chart it has x on the left and underneath are the numbers:... more

Microsoft Word - Math Problems.docxGiven 1/2𝑚1𝑣1i^2 + 1/2𝑚2𝑣2i^2 = 1/2𝑚1𝑣1f^2 + 1/2𝑚2𝑣2f^2 and 𝑚1𝑣1i + 𝑚2𝑣2i = 𝑚1𝑣1f + 𝑚2𝑣2f (1) derive symbolic expressions of 𝑣1f and 𝑣2f as a function of 𝑚1 ,... more

A driver in a car traveled at a speed of 21.8 m/s sees a cat 100m away on the road. How long will it take for the car to accelerate uniformly to stop in exactly 99m?

The drawing shows a square, each side of which has a length of L = 0.250 m. Two different positive charges q1 and q2 are fixed at the corners of the square. Find the electric potential energy of a... more

The escape speed from an object is v2 = 2GM/R, where M is the mass of the object, R is the object's starting radius, and G is the gravitational constant 6.67 × 10-11 m3 kg-1 s-2. What is the... more

Intensity of Light. The intensity I of light from a light bulb varies inversely as the square of the distance d from the bulb. Suppose that I is 90 W/m^2 (watts per square meter) when the distance... more