Homework Statement
The wind exerts a force of 420 N toward the south on the sails of Gerry’s sailboat, while the water exerts a force on the sailboat of 160 N west.The boat and Gerry have a combined mass of 320 kg, what are the magnitude and direction of the sailboat’s acceleration...
Homework Statement
A 2.0kg physics book is dropped from the roof of a skyscraper 240.1 m high. While the book is falling to the ground, a horizontal wind exerts a constant force of 11 N on it. Ignore air resistance.
a. How far from the building is the book when it hits the ground?
b. How...
Homework Statement
Santa arrives at the local mall by helicopter and, as the helicopter steadily descends at 1.0 m/s, he releases a bag of candy to the children waiting below. After 3 seconds:
a. what is the speed of the bag of candy?
b. how far is it below Santa’s helicopter?
c. What are...
Homework Statement
A man using a hang glider who is descending at a speed of 8 m/s drops his cell phone from an altitude of 30 m.
a. How long does it take the cell phone to reach the ground?
b. What is the velocity of the cell phone just before it hits the ground?Homework Equations...
Time Question -- how long did the train block the crossing?
Homework Statement
A commuter train 500 m long travels on a straight track at a speed of 78.6 km/h it slows down as it approaches a crossing. The last car passes the crossing at a speed of 15.8 km/h. With a constant acceleration, how...
Unfortunately so.
I am curious if this is correct:
5/7*4mph and 5/7*3mph
20/7 and 15/7
2.86 and 2.14 miles
2.86-2.14= 0.14 miles west of the fountain
I think I got this by a fluke by using d=tv then subtracted the mileage.
Homework Statement
Two joggers are approaching a water fountain from opposite directions. Jogger A begins 3.0 miles west of the water fountain, with a constant velocity of 4.0 mph due east. Jogger B begins 2.0 miles east of the water fountain, with a constant velocity of 3.0 mph due west. How...