A force in the negative direction of an x axis is applied for 36 ms to a 0.28 kg ball initially moving at 22 m/s in the positive direction of the axis. The force varies in magnitude, and the impulse has magnitude 42.8 N s. (a) What is the ball's velocity (including sign for direction) just after the force is applied? (b) What is the average magnitude of the force on the ball? (a) Number i Units (b) Number i Units

Assume: Moving to the right is positive. A(n) 10 g object moving to the right at 27 cm/s makes an elastic head-on collision with a 17 g object moving in the opposite direction at 40 cm/s. Find the velocity of the first object immediately after the collision. Answer in units of cm/s. Find the velocity of the second object after the collision. Answer in units of cm/s.

A block of mass m is pulled by a rope along a horizontal surface with negligible friction. For time t > 0, the magnitude of the acceleration of the object as a function of time is given by the equation a = Ae-kt , where A and k are positive constants. Which of the following expressions determines the impulse exerted on the block by the rope during the time interval 0 < t < t1 ?

A submarine with a mass of 5.85 ✕ 106 kg contains a torpedo with a mass of 320 kg. The submarine fires the torpedo at an angle of θ = 20° with respect to the horizontal as shown in the figure below. (a) If the submarine and the torpedo were initially at rest and the torpedo left the submarine with a speed of 89.4 m/s, what is the recoil speed of the submarine?  m/s(b) What is the direction of recoil of the submarine?  ( ° counterclockwise from the +x axis)

An object has a kinetic energy of 284 J and a momentum of magnitude 21.8 kg · m/s. (a) Find the speed of the object. m/s (b) Find the mass of the object. kg

Answer parts d, e and f

A basketball of mass 1.25 kg travelling with an initial speed of 8 m/sec bounces off of a backboard and comes back in the opposite direction with a speed of 7 m/sec. The ball is in contact with the backboard for 0.1 sec.  (a)  What is the impulse on the ball? (b)  What is the force exerted on the ball?

A 60.3 kg block is sliding along a frictionless surface with a speed of 20.2 m/s. It collides elastically with a second block of mass 12.9 kg. The second block is initially at rest. If this collision is one dimensional, what is the speed (in m/s) of the first block after the collision?

A car of mass 735 kg traveling at a velocity of 30 m/s in the positive x-direction crashes into the rear of a truck of mass 1,480 kg that is at rest and in neutral at an intersection. If the collision is inelastic and the truck moves forward at 13.5 m/s, what is the velocity of the car after the collision? (Indicate the direction with the sign of your answer. Assume the collision is head-on so that the motion of both vehicles remains entirely along the x-direction) m/s Submit Answer

CES Chapter 13, Problem 010 GO Two dimensions. In the figure, three point particles are fixed in place in an xy plane. Particle A has mass m, = 5 g, particle B has mass 2.00ma, and particle C has mass 3.00mA. A fourth particle D, with mass 4.00ma, is to be placed near the other three particles. What (a) x coordinate and (b) y coordinate should particle D be placed so that the net gravitational force on particle A from particles B, C, and D is zero (d = 17 cm)? em em BO plem 1.5d blem oblem roblem Units (a) Number Problem Units (b) Number Problem Click if you would like to Show Work for this question: Open Show Work