Welcome!
You can play around with physics settings for your object. As an example you can drag in a basic cube into the world and select it. In details panel for you object look for Simulate Physics and Enable Gravity. You want to tick the first one and leave the Gravity unchecked. Start the game and run into the cube.
You can also play around with MassInKg with Gravity enabled. Another things you could check are Linear and Angular Damping.