is the first part inccorrect? Im also wonding if my units in both were correct 7

Question

is the first part inccorrect? Im also wonding if my units in both were correct

7.[1pt] A ball of mass 7.0 g with a speed of 28.5 m/s surikes a wall at an angle 17.0° and then rebounds with the same speed and angle. It is in contact with the wall for 37.0 ms. What is the magnitude of the impulse associated with the collision force? Answer Not yet correct, tries 2/6 Submit All Answers Last Answer:.096 kg mis 8.lpt] What is the average force exerted by the ball on the wall? Answer Incorrect, tries 1/6 Submit All Answers Last Answer: 2.59N

Explanation / Answer

Only the x momentum is changed by the wall (I'm assuming the angle is respect to the wall)

So p = m*(vfx - vix) = 0.007kg*(28.5*sin(170) - (-28.5*sin(170)) = 0.1166kg-m/s

2. F anv*t = p

So F avg= p/t = 0.242/0.0367= 3.14N

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