Physics Answers

The footballer kicked the ball and it was caught by the opposing goalkeeper, 4 metres above the ground. The ball was traveling at 10 m/s^2.Calculate the kinetic energy of the ball just before it was caught.

A vector has a magnitude of 8.1

8.1 and is in quadrant 1 with an angle of 40.2

40.20 with respect to the +y

+y-axis. What is the x

x-component of the vector?

a cube made of an unknown material has a dimension of 6cm on all edges . if the upper face is displaced laterally by 0.1 mm by a force of 2 x 10 ^6 dynes acting parallel to the surface , calculate the shear modulus of the material

Motion along a Line with Constant Acceleration. A car is speeding up and has an instantaneous velocity of 1.0 m/s in the +x-direction when a stopwatch reads 10.0 s. It has a constant acceleration of 2.0 m/s² in the x-direction. (a) What change in speed occurs between t = 10.0 s and t = 12.0 s? (b) What is the speed when the stopwatch reads 12.0 s?

Please can someone answer this with solutions? Thank you very much

Three positive point charges of 3.0 µC, 6.0 µC, and 2.0 µC, respectively, are arranged in a triangular pattern, as shown in the figure below. Find the magnitude and direction of the electric force acting on the 6.0 µC charge.

Two charges of +25 μC and +16 μC are 90 mm apart. A third charge of -60 μC is placed on a line joining the two charges, 30 mm from the +25 μC charge. Find the net force on the third charge.

A proton moves across a magnetic field in a circular path of radius 20 cm. If the flux

density of the field is known to be 0.30 T, find the speed of the proton.

An airpalane is flying with a velocity of at an angle of above the horizontal.how far from the dog will suitcase land?

 John, in going to his Physics class, walks 30m, 450 N of E, then 40 m, 600 W of S and finally 50 m, straight south. Use the polygon method to determine the resultant vector 𝑅⃑ and check your result using the component method.

A cheetah is running at 100. km/hr directly after an antelope which is running at 90.0 km/hr. Assuming both animals run in a straight line, and the antelope is 10.0 m ahead, how long will it take for the cheetah to catch the antelope?