A runner with a mass of 77 kg accelerates from 0 to 7 m/s in 6 s. Find the net force on the runner using the alternate form of newtons second law.

A flea jumps by exerting a force of 1.35 x 10-5 N straight down on the ground. A breeze blowing on the flea parallel to the ground exerts a force of 0.660 x 107 N on the flea. Find the direction and magnitude of the acceleration of the flea its mass is 5.70 x 10 +y-direction is up.) kg. Do not neglect the gravitational force. (Assume that the breeze blows in the +x-direction and that the magnitude direction m/s2 x ° counterclockwise from the +x-axis

A force applied to an object of mass m1 produces an acceleration of 4.00 m/s2. The same force applied to the second object of mass m2 produces an acceleration of 1.80 m/s2. (a) What is the value of the ratio m1/m2? (b) If m1 and m2 are combined into one object, find its acceleration under the action of the force F.

Which of the following statement/s is/are correct regarding the concepts of motion?   According to Aristotle, a body that is stationary will continue to be stationary unless a force is applied to it. According to Aristotle, a falling body accelerates because its weight increases as it approaches Earth’s surface. According to Galileo, a body in motion along a frictionless surface does not need an external force to maintain its motion. According to Galileo, objects fall at the same rate even if one object is more massive than the other object.  1 and 2 3 and 4  1,3, and 4 1,2,3 and 4   Which of the following is a correct explanation to one of the consequences of Special Relativity? A. Time Dilation describes that twins would have different age difference if they both travel close to the speed of light. B. Mass-energy Equivalence paved the way for humans to create grenades to be used during wars and political conflicts. C. Relativity of Simultaneity implies that two events would not…