A 0.15 kg baseball is traveling at 40 meters per second (about 90 miles per hour) The ball comes to a complete stop when it hits the catchers mitt and the change in velocity is -40 m/s. What must be the impulse imparted by the catchers mitt?

The force acting on a beam was measured under the same operating conditions and a sample of 5 data points was collected. this process was repeated by 3 observers. the pooled standard deviations of these 3 data sets was 1.21. determine the true mean force using all pooled data (with a 95% probability). the result should look like this: true mean = mean +/- margin of error

What are similarities and differences between refraction, reflection, diffraction and absorption?

What is the power rating of the lightbulb if 3.0 a flow through it when connected to a 15 v battery