A 50 kg mass is sitting on a frictionless surface. A 200N force pushes the mass for 8.2 seconds until the mass reaches the desired velocity. Calculate the impulse in N.s. Only put in the numerical value. Answer to 1 decimal place and do not write the unit in your answer.

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BlackTom AI · Accepted Answer

The problem asks for the impulse when a constant force is applied for a certain time. 
First, recall that impulse J is defined as J = F × Δt, where F is the force and Δt is the time interval during which the force acts. 
In this scenario, F = 200 N and Δt = 8.2 s. 
Compute the product: 200 × 8.2 = 1640.0. 
Since the instruction specifies that the answer should be a numerical value with one decimal place and without the unit, the result to one decimal place is 1640.0. 
Additionally, note that this impulse also equals the change in momentum Δp, which would be m Δv for a mass m = 50 kg if you choose to verify via momentum, but the direct impulse computation here is straightforward because the force is constant over the known interval. 
If the force had varied, you would integrate F dt over the interval, but with a constant 200 N force, the simple product suffices. 
Be mindful that the problem emphasizes delivering only the numeric value, and you should ensure the final numeric value reflects the required decimal precision.

A 50 kg mass is sitting on a frictionless surface. A 200N force pushes the mass for 8.2 seconds until the mass reaches the desired velocity. Calculate the impulse in N.s. Only put in the numerical value. Answer to 1 decimal place and do not write the unit in your answer.

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A 50 kg mass is sitting on a frictionless surface. A 200N force pushes the mass for 8.2 seconds until the mass reaches the desired velocity. Calculate the impulse in N.s. Only put in the numerical value. Answer to 1 decimal place and do not write the unit in your answer.

View Explanation

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Which of the following is a correct definition of *impulse* in physics?

A 50 kg mass is sitting on a frictionless surface. A 157N force pushes the mass for 4.2 seconds until the mass reaches the desired velocity. Calculate the impulse in N.s. Only put in the numerical value. Answer to 1 decimal place and do not write the unit in your answer.

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A golf club exerts a force of 462 N on a golf ball ball for 18 ms. What impulse is given to the ball? Give your answer to one decimal place.

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Which of the following is a correct definition of impulse in physics?