An impulse of 10 Ns is applied to an object. If you know the force acting on the object was 20 N, what was the time interval the force occurred?

"A 1-kg car travelling at 30 m/s decelerates coming to stop in 5 seconds, as a result of applying the break. What is the impulse experienced by the car?" 6000 Ns 18000 NS 12000 Ns 24000 Ns None of these

A force of 50 N acts on an initially stationary object with a mass of 13 kg over a period of 4 seconds. (a) What is the impulse experienced by the object? (b) What is the object’s final momentum and velocity? (c) What is the work done on the object by the force?

If the impulse acting on a moving 100 kg object is zero, what does that mean about the velocity of the object? Recall that impulse is: F*t = m*Δv where Δv = vf - vi     vf > vi     vf = vi     vf < vi     Not enough information to determine.

An estimated force vs. time curve for a baseball struck by a bat is shown in the figure below. Fmax :18 000 N F (N) 20 000 %3D 15 000 10 000 5 000 t (ms) 2 1 (a) From this curve, determine the impulse delivered to the ball. 13500 Your response is off by a multiple of ten. N • s (b) From this curve, determine the average force exerted on the ball. 9000 Your response is off by a multiple of ten. kN

The magnitude of the net force exerted in the x direction on a 2.15-kg particle varies in time as shown in the figure below. F (N) 4 3 2 1 t(s) (a) Find the impulse of the force over the 5.00-s time interval. Ỉ = N.S 1 2 3 4 5 (b) Find the final velocity the particle attains if it is originally at rest. ✔f m/s (c) Find its final velocity if its original velocity is -3.50 î m/s. √ ₁ = m/s avg (d) Find the average force exerted on the particle for the time interval between 0 and 5.00 s. F N =

A careless driver driving at 25 m/s hit a tree while fumbling with his phone. Assume the driver was in contact with the air bag for 0.22 seconds, and his upper body has 37 kg in mass, then how much average force (absolute value) does the air bag exert on the driver's upper body? Ignore gravity since the force was horizontal. Hint: use impulse and the change of momentum.

The magnitude of the net force exerted in the x direction on a 2.10-kg particle varies in time as shown in the figure below. F (N) 4 3 2 1 1 2 3 4 (a) Find the impulse of the force over the 5.00-s time interval. I = 12 X N.s t (s) (b) Find the final velocity the particle attains if it is originally at rest. √₁² 3.076 = avg = (c) Find its final velocity if its original velocity is -2.30 î m/s. 7₁ -0.024 = X m/s (d) Find the average force exerted on the particle for the time interval between 0 and 5.00 s. F 2.4 X m/s XN

max 20,000 N, t, = 1.5 ms, and t, = 3 ms. From this curve, determine the An estimated force-time curve for a baseball struck by a bat is shown in the figure below. Let F, following. Fmax F (N) t (ms) ta (a) the magnitude of the impulse delivered to the ball N.s (b) the average force exerted on the ball kN

In utter despair during this test, you kick the wall with force of 1250 N. Before rebounding, your foot is in contact with the wall for 5.95×10-3 s. What is the magnitude of the impulse you deliver to the wall?